{"product_id":"hex-head-cap-screws-grade-8-steel-plain-5-16-18-x-4_3164ch8pbb","title":"[400 BULK] Hex Head Cap Screws Grade 8 Steel Plain  5\/16-18 x 4","description":"\u003cdiv\u003e\n\u003cp\u003eEngineered for strength and reliability, the Hex Head Cap Screws Grade 8 Steel Plain 5\/16-18 x 4 delivers high-torque performance for demanding assemblies. Crafted from Grade 8 steel with a plain (unplated) finish, these screws provide superior tensile strength and durability for mechanical, automotive, and industrial applications.\u003c\/p\u003e \u003cp\u003eDesigned for high-load fastening, these hex head cap screws resist loosening under vibration and heavy use, making them ideal for critical equipment assemblies and maintenance projects.\u003c\/p\u003e \u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eHead type:\u003c\/b\u003e Hex\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMaterial:\u003c\/b\u003e Grade 8 steel\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eFinish:\u003c\/b\u003e Plain (unplated)\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eDiameter:\u003c\/b\u003e 5\/16 in\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eThread pitch:\u003c\/b\u003e 18 TPI (5\/16-18 UNC)\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eLength:\u003c\/b\u003e 4 in\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eUsage:\u003c\/b\u003e Hex Head Cap Screws\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eIdeal for machinery, automotive repair, equipment mounting, and construction projects that demand a strong, dependable fastener.\u003c\/p\u003e \u003ch3\u003eInstallation and care\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eCompatibility:\u003c\/b\u003e Use with nuts and washers rated for 5\/16-18 threads.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eTorque:\u003c\/b\u003e Apply torque per standard Grade 8 fastener guidelines to achieve proper clamping force without over-tightening.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Mutual Screw","offers":[{"title":"Default Title","offer_id":50348989415703,"sku":"3164CH8PBB","price":150.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/hex_cap_screw_plain_steel1_9345a18d-67f5-49c0-ab90-c30a6a53661b.gif?v=1744980785","url":"https:\/\/mutualscrew.com\/products\/hex-head-cap-screws-grade-8-steel-plain-5-16-18-x-4_3164ch8pbb","provider":"Mutual Screw \u0026 Supply","version":"1.0","type":"link"}