{"product_id":"hex-head-cap-screws-grade-5-steel-plain-usa-made-5-16-18-x-5-8_3110ch5pdbb","title":"[100 PKG] Hex Head Cap Screws Grade 5 Steel Plain (USA Made) 5\/16-18 x 5\/8","description":"\u003cdiv\u003e\n\u003cp\u003eEngineered for reliability, the \u003cb\u003eHex Head Cap Screws\u003c\/b\u003e \u003cb\u003eGrade 5 steel\u003c\/b\u003e \u003cb\u003ePlain\u003c\/b\u003e (USA Made) 5\/16-18 x 5\/8 deliver dependable fastening for heavy-duty projects. Made in the \u003cb\u003eUSA\u003c\/b\u003e from \u003cb\u003eGrade 5 steel\u003c\/b\u003e with a \u003cb\u003eplain\u003c\/b\u003e finish, these screws pair with standard 5\/16-18 nuts and tapped holes, ensuring strong, secure joints in machinery, automotive, and fabrication tasks.\u003c\/p\u003e \u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eSize \u0026amp; Thread\u003c\/b\u003e: 5\/16-18 x 5\/8 (5\/16-18 UNC)\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMaterial\u003c\/b\u003e: Grade 5 steel\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eFinish\u003c\/b\u003e: Plain (uncoated)\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eHead \u0026amp; Drive\u003c\/b\u003e: Hex head with external hex drive\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eOrigin\u003c\/b\u003e: USA made\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThese hex screws are designed for reliability in automotive, machinery, equipment assembly, and fabrication projects where strong, durable fasteners are required. The \u003cb\u003eGrade 5 steel\u003c\/b\u003e provides high strength for demanding applications, while the plain finish keeps options open for coating or painting if needed.\u003c\/p\u003e \u003cp\u003eTo use, ensure alignment with compatible nuts or tapped holes, clean threads, and torque to manufacturer guidelines for \u003cb\u003e5\/16-18\u003c\/b\u003e fasteners. For assemblies exposed to moisture or outdoor environments, consider protective finishes or plating, as plain steel offers limited corrosion resistance.\u003c\/p\u003e \u003cp\u003eAdd to cart now to secure a dependable, USA-made fastening solution for your next project.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Mutual Screw","offers":[{"title":"Default Title","offer_id":50348823937303,"sku":"3110CH5PDBB","price":21.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/hex_cap_screw_plain_steel1_14add142-0940-4d4a-8dc8-022c5d3f0f90.gif?v=1744923555","url":"https:\/\/mutualscrew.com\/products\/hex-head-cap-screws-grade-5-steel-plain-usa-made-5-16-18-x-5-8_3110ch5pdbb","provider":"Mutual Screw \u0026 Supply","version":"1.0","type":"link"}