{"product_id":"hex-head-cap-screws-grade-8-steel-plain-5-16-18-x-3-4_3112ch8pbb","title":"[1650 BULK] Hex Head Cap Screws Grade 8 Steel Plain  5\/16-18 x 3\/4","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eHex Head Cap Screws\u003c\/b\u003e Grade 8 steel with a plain finish for heavy-duty fastening. The \u003cb\u003e5\/16-18\u003c\/b\u003e UNC thread and \u003cb\u003e3\/4\"\u003c\/b\u003e length make these screws a versatile choice for automotive, machinery, and structural projects where high strength is essential.\u003c\/p\u003e \u003cp\u003eKey features:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eGrade 8 steel\u003c\/b\u003e for superior strength and durability under high torque.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePlain finish\u003c\/b\u003e — uncoated steel suitable for indoor or protected environments; not corrosion-resistant.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eThread size\u003c\/b\u003e \u003cb\u003e5\/16-18 UNC\u003c\/b\u003e for a common, widely compatible pitch.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eLength\u003c\/b\u003e 3\/4 inch to fit a range of assembly thicknesses.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eHead type\u003c\/b\u003e Hex head cap screw for easy wrenching with standard tools.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eApplications include machinery assembly, automotive repairs, equipment installation, and other high-load fastener tasks where reliable clamping is critical. For outdoor or harsh environments, consider protective coatings or compatible hardware to extend service life. Torque and clamping performance depend on proper lubrication, thread engagement, and correct driving technique. Always refer to your project’s torque specification and fastener manufacturer guidelines.\u003c\/p\u003e \u003cp\u003eAdd these \u003cb\u003eGrade 8 Hex Head Cap Screws\u003c\/b\u003e to your toolkit for dependable, high-strength fastening. Available in 5\/16-18 x 3\/4\" size.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Mutual Screw","offers":[{"title":"Default Title","offer_id":50348988727575,"sku":"3112CH8PBB","price":159.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/hex_cap_screw_plain_steel1_965fa263-b452-4400-8cbb-4d0587943c71.gif?v=1744983874","url":"https:\/\/mutualscrew.com\/products\/hex-head-cap-screws-grade-8-steel-plain-5-16-18-x-3-4_3112ch8pbb","provider":"Mutual Screw \u0026 Supply","version":"1.0","type":"link"}