{"title":"Jam Nuts","description":"\u003cp\u003eSignificantly thinner than standard hex nuts, jam nuts are used as a secondary fastener to lock an assembled nut in place, preventing rotational loosening due to vibration or thermal expansion. They are essential in assemblies where consistent torque retention and anti-loosening security are paramount.\u003c\/p\u003e","products":[{"product_id":"hex-jam-nuts-steel-zinc-yellow-7-16-14_43njykc","title":"7\/16\"-14 Hex Jam Nuts | Steel Zinc Yellow (1600 \/ Pkg.)","description":"","brand":"Mutual Screw","offers":[{"title":"Default Title","offer_id":50379675107607,"sku":"43NJYKC","price":274.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/33_304189bb-a7d9-40d3-b37f-4f344cbc19ab.webp?v=1778789830"},{"product_id":"hex-jam-nuts-steel-zinc-yellow-7-16-20_44njykc","title":"7\/16\"-20 Hex Jam Nuts | Steel Zinc Yellow (1600 \/ Pkg.)","description":"","brand":"Mutual Screw","offers":[{"title":"Default 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These compact, high-strength nuts are designed to lock bolts securely in place, delivering dependable performance in a wide range of applications.\u003c\/p\u003e \u003cp\u003eConstructed from \u003cb\u003eGrade 5 steel\u003c\/b\u003e, this jam nut delivers a balanced combination of strength and ductility. The \u003cb\u003ezinc plating\u003c\/b\u003e provides excellent corrosion resistance, making it suitable for both indoor and moderate outdoor environments.\u003c\/p\u003e \u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eGrade 5 steel\u003c\/b\u003e for robust performance under vibration and stress\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eZinc plated\u003c\/b\u003e finish for corrosion resistance and extended life\u003c\/li\u003e \u003cli\u003eThread size: \u003cb\u003e1\/4-28 UNF\u003c\/b\u003e for precise, secure engagement\u003c\/li\u003e \u003cli\u003eThin, hex jam design optimizes space in tight assemblies\u003c\/li\u003e \u003cli\u003eIdeal for mechanical, automotive, and industrial fastening applications\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eType: \u003cb\u003eHex jam nut\u003c\/b\u003e\n\u003c\/li\u003e \u003cli\u003eMaterial: \u003cb\u003eGrade 5 steel\u003c\/b\u003e\n\u003c\/li\u003e \u003cli\u003eFinish: \u003cb\u003eZinc plated\u003c\/b\u003e\n\u003c\/li\u003e \u003cli\u003eThread: \u003cb\u003e1\/4-28 UNF\u003c\/b\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eFor best results, ensure proper torque and pairing with compatible bolts to prevent loosening in dynamic applications. Add these reliable hex jam nuts to your toolkit for quick, secure closures on equipment, machinery, and assemblies.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Mutual Screw","offers":[{"title":"Default Title","offer_id":50379761713431,"sku":"15NJ5KC","price":202.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/14NJ5KC_d79fdfc0-589c-4d04-aeec-c82886deead2.webp?v=1744941527"},{"product_id":"hex-jam-nuts-grade-5-steel-zinc-plated-5-16-18_31nj5kc","title":"[4000 BULK] Hex Jam Nuts Grade 5 Steel Zinc Plated 5\/16-18","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eHex Jam Nuts Grade 5 Steel Zinc Plated 5\/16-18\u003c\/b\u003e are compact, high-strength fasteners designed to lock against standard nuts and prevent loosening in demanding applications.\u003c\/p\u003e\n\u003cp\u003eMade from Grade 5 steel and finished with a zinc plating, these jam nuts offer superior strength and corrosion resistance for machinery, automotive, and construction projects.\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eGrade 5 steel construction\u003c\/b\u003e delivers reliable strength for demanding threaded assemblies.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eZinc plating\u003c\/b\u003e provides corrosion resistance in a wide range of environments.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003e5\/16-18 thread\u003c\/b\u003e size ensures compatibility with common fasteners and hardware.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eJam nut design\u003c\/b\u003e creates a locking action that minimizes loosening under vibration.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eVersatile applications\u003c\/b\u003e ideal for automotive, equipment, and general construction tasks requiring secure fasteners.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor best results, tighten to the recommended torque and pair with a standard nut to create a double-nutting effect that stays secure in service.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Mutual Screw","offers":[{"title":"Default Title","offer_id":50379761778967,"sku":"31NJ5KC","price":269.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/14NJ5KC_83348f42-7041-4852-9e2c-1bd11a9b2ca7.webp?v=1744976232"},{"product_id":"hex-jam-nuts-grade-5-steel-zinc-plated-3-8-16_37nj5kc","title":"[3000 BULK] Hex Jam Nuts Grade 5 Steel Zinc Plated 3\/8-16","description":"\u003cdiv\u003e\n\u003ch2\u003eHex Jam Nuts Grade 5 Steel Zinc Plated 3\/8-16\u003c\/h2\u003e\n\u003cp\u003e\u003cb\u003eDurable hex jam nuts\u003c\/b\u003e designed for reliable locking on \u003ci\u003e3\/8-16\u003c\/i\u003e fasteners. Made from \u003ci\u003eGrade 5 steel\u003c\/i\u003e and finished with \u003ci\u003ezinc plating\u003c\/i\u003e for enhanced corrosion resistance, these jam nuts deliver dependable performance in a wide range of applications.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eMaterial:\u003c\/b\u003e Grade 5 steel for strength and resilience\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eFinish:\u003c\/b\u003e Zinc plating for improved corrosion resistance\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eThread size:\u003c\/b\u003e 3\/8-16\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eType:\u003c\/b\u003e Hex jam nut (short nut used with a standard hex nut to lock against loosening)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy choose these jam nuts?\u003c\/h3\u003e\n\u003cp\u003eIdeal for securing assemblies in spaces where a compact locking solution is needed. The Grade 5 steel provides robust performance under normal loads, while the zinc finish helps protect against rust in interior or protected environments. Pair these jam nuts with a standard nut to prevent vibration-induced loosening in mechanical hardware, equipment, and automotive applications.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Mutual Screw","offers":[{"title":"Default Title","offer_id":50379761975575,"sku":"37NJ5KC","price":425.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/14NJ5KC_a02a3f88-3748-4762-93b7-b6324e5962d7.webp?v=1744976234"},{"product_id":"hex-jam-nuts-class-04-steel-zinc-plated-din-439b-m35-6_m35d439bkc","title":"M3.5-6 Jam Nuts | Class 04 Steel Zinc Plated (10000 \/ Pkg.)","description":"\u003cdiv\u003e\n\u003cp\u003eEnhance your assemblies with the Hex Jam Nut Class 04 Steel Zinc Plated DIN 439B M3.5-6. This high-precision fastener is designed to lock securely in place, preventing loosening in vibrating or dynamic environments. Manufactured to DIN 439B standards, it offers consistent dimensions, a robust Class 04 steel body, and a corrosion-resistant zinc finish for long-lasting performance in metal-to-metal applications.\u003c\/p\u003e \u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eType:\u003c\/b\u003e Hex Jam Nut\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMaterial:\u003c\/b\u003e Steel\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eFinish:\u003c\/b\u003e Zinc Plated\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eStandard:\u003c\/b\u003e DIN 439B\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eClass:\u003c\/b\u003e 04\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eSize:\u003c\/b\u003e M3.5-6\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eKey benefits include reliable locking, enhanced resistance to loosening under vibration, and compatibility with standard bolts of the corresponding thread. The DIN 439B designation ensures interchangeability across suppliers for fastener assemblies.\u003c\/p\u003e \u003cp\u003eIdeal for automotive, machinery, and equipment applications where a secure jam nut is required to maintain assembly integrity.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Mutual Screw","offers":[{"title":"Default Title","offer_id":50379762237719,"sku":"M3.5D439BKC","price":52.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/14NJ5KC_bdf54957-f9e0-4539-83ba-f9345c8a12c9.webp?v=1744932306"},{"product_id":"hex-jam-nuts-class-04-steel-zinc-plated-din-439b-m3-5_m3d439bkc","title":"M3-.5 Jam Nuts | Class 04 Steel Zinc Plated (10000 \/ Pkg.)","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eHex Jam Nuts Class 04 Steel Zinc Plated DIN 439B M3-.5\u003c\/b\u003e are precision-engineered thin hex nuts designed to lock fasteners in place and prevent loosening in high-vibration environments. Manufactured to DIN 439B standards with Class 04 tolerance, these jam nuts provide reliable dimensions and a secure fit for metric M3-.5 bolts.\u003c\/p\u003e \u003cp\u003eCrafted from strong steel and finished with zinc plating for corrosion resistance, these jam nuts offer durability in a wide range of applications, including machinery, electronics assembly, and automotive components. The Class 04 tolerance ensures consistent thickness and width across production lots, enabling repeatable performance.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eMaterial: steel\u003c\/li\u003e \u003cli\u003eFinish: zinc plated for corrosion resistance\u003c\/li\u003e \u003cli\u003eStandards: DIN 439B\u003c\/li\u003e \u003cli\u003eTolerance: Class 04\u003c\/li\u003e \u003cli\u003eThread: M3-.5\u003c\/li\u003e \u003cli\u003eType: hex jam nut (thin nut used to lock another nut)\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eBenefits include a secure lock, reduced loosening, and a compact profile for tight spaces. Ideal for panel assemblies, motor mounts, and precision equipment requiring reliable thread locking in a compact form.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Mutual Screw","offers":[{"title":"Default Title","offer_id":50379762532631,"sku":"M3D439BKC","price":138.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/14NJ5KC_d52bacbf-74ae-4358-b4c8-5d0e127f7915.webp?v=1744929164"},{"product_id":"hex-jam-nuts-class-04-steel-zinc-plated-din-439b-m4-7_m4d439bkc","title":"[10000 BULK] Hex Jam Nuts Class 04 Steel Zinc Plated DIN 439B M4-.7","description":"\u003cdiv\u003e\n\u003cp\u003eHex Jam Nuts Class 04 Steel Zinc Plated DIN 439B M4-.7 offer reliable locking for compact, high-precision assemblies. Constructed from sturdy steel with a corrosion-resistant zinc plating, these DIN 439B hex jam nuts are designed for M4-.7 threaded bolts in tight spaces.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eDIN 439B\u003c\/b\u003e standard ensures precise dimensions and compatibility with metric fasteners.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMaterial\u003c\/b\u003e: Class 04 steel for strength and durability.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eFinish\u003c\/b\u003e: Zinc plating for enhanced corrosion resistance.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eThread Size\u003c\/b\u003e: M4-.7, hex jam nut geometry for secure clamping in tight spaces.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eLocking Action\u003c\/b\u003e: Designed to be used with a standard nut to prevent loosening in vibrational or dynamic applications.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApplications\u003c\/b\u003e: Great for machinery, automotive, electronics, and general hardware projects.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cb\u003eKey specifications:\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eDIN\u003c\/b\u003e: 439B\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMaterial\u003c\/b\u003e: Steel\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eClass\u003c\/b\u003e: 04\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eFinish\u003c\/b\u003e: Zinc plated\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eSize\u003c\/b\u003e: M4-.7\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eHow to use: Place the jam nut against the mating nut and tighten to lock the assembly in place. For best results, follow standard torque guidelines for M4 fasteners and ensure proper seating against the surface.\u003c\/p\u003e \u003cp\u003eEnhance your hardware projects with these hex jam nuts. Add to cart today to secure your threaded assemblies with confidence.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Mutual Screw","offers":[{"title":"Default Title","offer_id":50379762565399,"sku":"M4D439BKC","price":109.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/14NJ5KC_03875272-2ea7-459f-8b4a-b1f28618b8ba.webp?v=1744936075"},{"product_id":"hex-jam-nuts-class-04-steel-zinc-plated-din-439b-m5-8_m5d439bkc","title":"[8000 BULK] Hex Jam Nuts Class 04 Steel Zinc Plated DIN 439B M5-.8","description":"\u003cdiv\u003e\n\u003cp\u003eUpgrade your fastener kit with the Hex Jam Nuts Class 04 Steel Zinc Plated DIN 439B M5-.8. These compact nuts are engineered to secure bolts and studs, resisting loosening from vibration and dynamic loads in a wide range of assemblies.\u003c\/p\u003e \u003cp\u003eCrafted from durable steel and finished with a zinc plating, the Class 04 tolerance ensures consistent engagement and accurate fit with DIN 439B specifications, providing reliable performance in demanding environments.\u003c\/p\u003e \u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eProduct type:\u003c\/b\u003e Hex jam nut\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMaterial:\u003c\/b\u003e Steel\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eFinish:\u003c\/b\u003e Zinc plated\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eStandard:\u003c\/b\u003e DIN 439B\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eThread size:\u003c\/b\u003e M5\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eThread pitch:\u003c\/b\u003e 0.8 mm\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eClass:\u003c\/b\u003e Class 04\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eKey benefits include secure locking, resistance to loosening, and compatibility with standard M5 bolts. The zinc plating adds corrosion resistance for long-term use in indoor and light outdoor applications.\u003c\/p\u003e \u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eGeneral mechanical assemblies\u003c\/li\u003e \u003cli\u003eAutomotive and machinery projects\u003c\/li\u003e \u003cli\u003eFurniture and equipment mounting\u003c\/li\u003e \u003cli\u003eElectronics enclosures and equipment housings\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eAdd these jam nuts to your cart for reliable, precise fastening in your next project.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Mutual Screw","offers":[{"title":"Default Title","offer_id":50379762598167,"sku":"M5D439BKC","price":111.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/14NJ5KC_4cb85c8e-a2a5-4a37-b398-28afaaee1ec7.webp?v=1744936914"},{"product_id":"hex-jam-nuts-class-04-steel-zinc-plated-din-439b-m6-1_m6d439bkc","title":"[5000 BULK] Hex Jam Nuts Class 04 Steel Zinc Plated DIN 439B M6-1","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eHex Jam Nuts Class 04 Steel Zinc Plated DIN 439B M6-1\u003c\/b\u003e are compact, locking fasteners designed to secure assemblies where space is limited and vibration is a concern.\u003c\/p\u003e\n\u003cp\u003eCrafted from sturdy steel and finished with zinc plating, these jam nuts deliver reliable corrosion resistance and long-lasting performance in a wide range of environments. The DIN 439B specification ensures consistent dimensions and fit with the corresponding bolt sizes, while the Class 04 tolerance provides dependable alignment and a snug engagement for reliable locking power. The M6-1 designation identifies the thread size and pitch.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eMaterial\u003c\/b\u003e: Steel with zinc plating for corrosion resistance\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFinish\u003c\/b\u003e: Zinc plating\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eStandards\u003c\/b\u003e: DIN 439B\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThread\u003c\/b\u003e: M6-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eClass\u003c\/b\u003e: 04 tolerance\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eProduct type\u003c\/b\u003e: Hex jam nut (locknut)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUse this hex jam nut to lock bolts in place, preventing loosening due to vibration in mechanical assemblies, automotive applications, and machinery mounting hardware. For optimal lock performance, pair with the matching bolt and seating that meet DIN 439B specifications.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Mutual Screw","offers":[{"title":"Default Title","offer_id":50379763089687,"sku":"M6D439BKC","price":143.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/14NJ5KC_6bd815e4-9a36-45e0-a58a-5b545e41df09.webp?v=1744938932"},{"product_id":"hex-jam-nuts-class-04-steel-zinc-plated-din-439b-m8-125_m8d439bkc","title":"[2500 BULK] Hex Jam Nuts Class 04 Steel Zinc Plated DIN 439B M8-1.25","description":"\u003cdiv\u003e\n\u003cp\u003eDiscover \u003cb\u003eHex Jam Nuts\u003c\/b\u003e Class 04 \u003cb\u003eSteel\u003c\/b\u003e with a \u003cb\u003eZinc Plated\u003c\/b\u003e finish, DIN 439B specification, and an \u003cb\u003eM8-1.25\u003c\/b\u003e thread. These \u003cb\u003ejam nuts\u003c\/b\u003e are designed to work with a standard hex nut to create a locking interface that resists loosening in vibration-heavy applications.\u003c\/p\u003e \u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eMaterial:\u003c\/b\u003e Steel\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eFinish:\u003c\/b\u003e Zinc plated for corrosion resistance\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eClass:\u003c\/b\u003e 04 for dependable strength and torque performance\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eThread:\u003c\/b\u003e M8-1.25\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eType:\u003c\/b\u003e Hex jam nut\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eStandard:\u003c\/b\u003e DIN 439B\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eLocking action:\u003c\/b\u003e Locks against standard nuts to prevent loosening\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eDIN standard:\u003c\/b\u003e 439B\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eThread size:\u003c\/b\u003e M8-1.25\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMaterial:\u003c\/b\u003e Steel\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eFinish:\u003c\/b\u003e Zinc-plated\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUsed in machinery, automotive assemblies, and industrial equipment to secure components where space is limited and vibration occurs\u003c\/li\u003e \u003cli\u003eIdeal for maintenance and repair tasks requiring reliable locking nuts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Mutual Screw","offers":[{"title":"Default Title","offer_id":50379763122455,"sku":"M8D439BKC","price":100.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/14NJ5KC_c7d90c74-c8a2-412c-8247-ee7811cfcc1d.webp?v=1744939532"},{"product_id":"hex-jam-nuts-class-04-steel-zinc-plated-din-439b-m8-1_m8fd439bkc","title":"[2500 BULK] Hex Jam Nuts Class 04 Steel Zinc Plated DIN 439B M8-1","description":"\u003cdiv\u003e\n\u003cp\u003eSecure fastenings with precision using our Hex Jam Nut Class 04 Steel Zinc Plated DIN 439B M8-1. Engineered to DIN 439B standards, this hex jam nut delivers reliable locking action in tight spaces where space is at a premium.\u003c\/p\u003e \u003cp\u003eConstructed from durable steel and finished with zinc plating, it provides excellent corrosion resistance for both indoor and light outdoor applications. The Class 04 tolerance ensures a high-precision fit for dependable performance under vibration and dynamic loads.\u003c\/p\u003e \u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDIN 439B compliant hex jam nut\u003c\/li\u003e\n\u003cli\u003eClass 04 precision tolerance for a secure lock\u003c\/li\u003e\n\u003cli\u003eSteel with zinc plating for durability and corrosion resistance\u003c\/li\u003e\n\u003cli\u003eMetric size M8-1, suitable for M8 threaded assemblies\u003c\/li\u003e\n\u003cli\u003eCompact hex jam nut design ideal for limited-space locking\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch4\u003eApplications\u003c\/h4\u003e\n\u003cp\u003eIdeal for machinery assemblies, automotive maintenance, equipment installation, and general fastening tasks where a jam nut helps prevent loosening under vibration.\u003c\/p\u003e \u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProduct Type: Hex Jam Nut\u003c\/li\u003e\n\u003cli\u003eStandard: DIN 439B\u003c\/li\u003e\n\u003cli\u003eSize: M8-1\u003c\/li\u003e\n\u003cli\u003eMaterial: Steel\u003c\/li\u003e\n\u003cli\u003eFinish: Zinc Plated\u003c\/li\u003e\n\u003cli\u003eTolerance Class: 04\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Mutual Screw","offers":[{"title":"Default Title","offer_id":50379763155223,"sku":"M8FD439BKC","price":131.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/14NJ5KC_49f991c6-bedc-4447-9148-a7fc97d79bfc.webp?v=1744938931"},{"product_id":"hex-jam-nuts-class-04-steel-zinc-plated-din-439b-m10-15_m10d439bkc","title":"M10-1.5 Jam Nuts | Class 04 Steel Zinc Plated (1000 \/ Pkg.)","description":"\u003cdiv\u003e\n\u003cp\u003eHex Jam Nuts Class 04 Steel Zinc Plated DIN 439B M10-1.5 are compact, locking fasteners designed to secure assemblies where space is limited. The jam nut's thin profile helps lock a standard nut in place, preventing loosening due to vibration or dynamic loads.\u003c\/p\u003e \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eProduct type:\u003c\/b\u003e Hex jam nut (locking nut)\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eStandards:\u003c\/b\u003e DIN 439B\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMaterial:\u003c\/b\u003e Steel\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eFinish:\u003c\/b\u003e Zinc plated\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eClass:\u003c\/b\u003e 04\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eThread:\u003c\/b\u003e M10 x 1.5 (metric, pitch 1.5)\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePart type:\u003c\/b\u003e Jam nut, thin nut\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eKey benefits\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eLocking action:\u003c\/b\u003e Helps prevent nuts from loosening under vibration\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eSpace-saving:\u003c\/b\u003e Thinner profile fits in tight clearance areas\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eCorrosion resistance:\u003c\/b\u003e Zinc plating enhances durability in challenging environments\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eConsistent fit:\u003c\/b\u003e DIN 439B ensures precise dimensions and reliable engagement\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eIdeal for machinery, automotive assemblies, equipment, and general industrial fastener kits where a secondary locking nut is required without adding bulk.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Mutual Screw","offers":[{"title":"Default Title","offer_id":50379763384599,"sku":"M10D439BKC","price":51.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/14NJ5KC_605e884e-4107-4661-b813-b581aa11ba55.webp?v=1744938931"},{"product_id":"hex-jam-nuts-class-04-steel-zinc-plated-din-439b-m10-125_m10fd439bkc","title":"[1000 BULK] Hex Jam Nuts Class 04 Steel Zinc Plated DIN 439B M10-1.25","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eHex Jam Nut\u003c\/b\u003e Class 04 Steel Zinc Plated DIN 439B M10-1.25 offers a compact, high-strength locking solution for securing bolt assemblies in tight spaces and vibration-prone environments.\u003c\/p\u003e\n\u003cp\u003eManufactured from durable steel with a zinc finish, this jam nut meets \u003cb\u003eDIN 439B\u003c\/b\u003e standards, ensuring consistent dimensions and reliable thread engagement for \u003cb\u003eM10-1.25\u003c\/b\u003e fasteners.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eType:\u003c\/b\u003e Hex Jam Nut\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eStandard:\u003c\/b\u003e DIN 439B\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMaterial:\u003c\/b\u003e Steel\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eFinish:\u003c\/b\u003e Zinc Plated\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eThread Size:\u003c\/b\u003e M10 x 1.25\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eClass:\u003c\/b\u003e 04\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIdeal for mechanical assemblies, automotive, equipment, and general construction where a jam nut provides locking action and protection against loosening due to vibration. Pair with a standard hex bolt and, if needed, a washer for added stability.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Mutual Screw","offers":[{"title":"Default Title","offer_id":50379763417367,"sku":"M10FD439BKC","price":99.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/14NJ5KC_e827f1cc-d1fa-4ac9-ba96-3899f9854f1f.webp?v=1744938933"},{"product_id":"hex-jam-nuts-class-04-steel-zinc-plated-din-439b-m12-175_m12d439bkc","title":"M12-1.75 Jam Nuts | Class 04 Steel Zinc Plated (500 \/ Pkg.)","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eHex Jam Nuts Class 04 Steel Zinc Plated DIN 439B M12-1.75\u003c\/b\u003e is a robust locking nut designed for secure fastening in mechanical assemblies. This jam nut complies with DIN 439B and is ideal for applications where a nut needs to be locked against vibration and loosening.\u003c\/p\u003e \u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eMaterial:\u003c\/b\u003e Class 04 steel\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eFinish:\u003c\/b\u003e Zinc plated for enhanced corrosion resistance\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eStandards:\u003c\/b\u003e DIN 439B\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eThread size:\u003c\/b\u003e M12 with 1.75 mm pitch\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eType:\u003c\/b\u003e Hex jam nut (locknut) that tightens against another nut or surface to prevent loosening\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy choose this hex jam nut?\u003c\/h3\u003e\n\u003cp\u003eHex jam nuts are thinner than standard nuts and provide a compact locking solution suitable for tight spaces. The M12-1.75 sizing ensures compatibility with standard M12 bolts, while zinc plating adds a durable shield against corrosion in challenging environments. DIN 439B ensures interchangeability and reliable performance across machinery, automotive, and hardware projects.\u003c\/p\u003e \u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eUse this hex jam nut to secure bolts in machinery, equipment housings, automotive assemblies, and construction projects where a secondary locking nut is required to prevent loosening under vibration.\u003c\/p\u003e \u003cp\u003eOrder with confidence for a dependable, OEM-grade locking solution that meets exacting DIN standards and delivers consistent torque and bite.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Mutual Screw","offers":[{"title":"Default Title","offer_id":50379763712279,"sku":"M12D439BKC","price":56.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/14NJ5KC_5926de51-a9e5-4df9-b189-e84508e6403d.webp?v=1744935306"},{"product_id":"hex-jam-nuts-class-04-steel-zinc-plated-din-439b-m12-15_m12fd439bkc","title":"M12-1.5 Jam Nuts | Class 04 Steel Zinc Plated (500 \/ Pkg.)","description":"\u003cdiv\u003e\n\u003cp\u003ePremium Hex Jam Nut engineered for precise, compact locking in metric assemblies. This Class 04 steel jam nut is zinc plated for durability and corrosion resistance, and conforms to DIN 439B with a thread specification of M12-1.5.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eType:\u003c\/b\u003e Hex Jam Nut\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMaterial:\u003c\/b\u003e Steel\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eFinish:\u003c\/b\u003e Zinc Plated\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eStandard:\u003c\/b\u003e DIN 439B\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eClass:\u003c\/b\u003e Class 04\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eThread:\u003c\/b\u003e M12-1.5\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eSize:\u003c\/b\u003e M12\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eApplications include securing bolts in machinery, automotive assemblies, and equipment where a secondary locking nut is desired to prevent vibration-induced loosening. The zinc plating provides corrosion resistance in light-to-moderate environments, while the Class 04 tolerance ensures a consistent fit across batches.\u003c\/p\u003e \u003cp\u003eShop with confidence—this Hex Jam Nut delivers reliable clamping and long-lasting performance in DIN 439B-compliant assemblies. Add to cart now for fast, secure fastening.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Mutual Screw","offers":[{"title":"Default Title","offer_id":50379763745047,"sku":"M12FD439BKC","price":54.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/14NJ5KC_fe96d82a-5aa8-4d83-ac6e-53759bf11b06.webp?v=1744935313"},{"product_id":"hex-jam-nuts-class-04-steel-zinc-plated-din-439b-m16-2_m16d439bkc","title":"M16-2 Jam Nuts | Class 04 Steel Zinc Plated (250 \/ Pkg.)","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Hex Jam Nut DIN 439B M16-2 — a compact, high-precision fastener designed to lock bolts and resist loosening in demanding assemblies. Crafted from steel with a zinc plating, this nut meets DIN 439B specifications and Class 04 tolerances for dependable performance with M16-2 threaded components.\u003c\/p\u003e \u003ch3\u003eProduct Highlights\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eType:\u003c\/b\u003e Hex Jam Nut\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eStandards:\u003c\/b\u003e DIN 439B\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eTolerance Class:\u003c\/b\u003e Class 04\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMaterial:\u003c\/b\u003e Steel\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eFinish:\u003c\/b\u003e Zinc Plated\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eSize \/ Thread:\u003c\/b\u003e M16-2\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eThis jam nut is ideal for securing nuts and bolts in mechanical assemblies, equipment housings, and infrastructure where a reliable locking nut is required to prevent loosening under vibration or dynamic loads.\u003c\/p\u003e \u003ch3\u003eWhy Choose DIN 439B Hex Jam Nut M16-2?\u003c\/h3\u003e\n\u003cp\u003eWith a zinc finish for corrosion resistance and tight Class 04 tolerances, it provides a consistent fit and long service life in both indoor and mildly corrosive environments. It pairs with standard ISO metric M16 bolts and studs to secure assemblies quickly and reliably.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eOrder now\u003c\/b\u003e to add dependable locking performance to your next project.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Mutual Screw","offers":[{"title":"Default Title","offer_id":50379763777815,"sku":"M16D439BKC","price":23.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/14NJ5KC_c95cf7f5-7f03-4334-9059-a763e2ce17e4.webp?v=1744935311"},{"product_id":"hex-jam-nuts-18-8-stainless-1-4-28_15nj188kc","title":"[2000 BULK] Hex Jam Nuts 18\/8 Stainless 1\/4-28","description":"\u003cdiv\u003e\n\u003cp\u003eHex Jam Nuts 18\/8 Stainless 1\/4-28 are compact locking nuts crafted to secure bolt assemblies with reliable corrosion resistance. Made from 18\/8 stainless steel, these jam nuts deliver durable performance in a wide range of environments while resisting rust and corrosion.\u003c\/p\u003e \u003cp\u003eDesigned for 1\/4-28 threaded bolts, this hex jam nut provides a dependable locking solution when tightened against another nut or against the bolt shoulder to prevent loosening from vibration and dynamic loads.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eMaterial:\u003c\/b\u003e 18\/8 stainless steel for excellent corrosion resistance and strength.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThread compatibility:\u003c\/b\u003e Fits standard 1\/4-28 bolts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLocking design:\u003c\/b\u003e Hex jam nut style helps secure assemblies in place.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eApplications:\u003c\/b\u003e Ideal for mechanical, automotive, and general hardware projects requiring a reliable locking nut.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoose these Hex Jam Nuts for long-lasting performance, easy installation, and a clean stainless finish that stands up to moisture, humidity, and routine wear. 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Crafted from \u003cb\u003e18\/8 stainless steel\u003c\/b\u003e for superior corrosion resistance and long-lasting durability, these jam nuts deliver reliable performance in a compact hex form.\u003c\/p\u003e \u003cp\u003eDesigned as a locking nut, the jam nut is tightened against another nut or component to create a secure locking surface. 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