{"product_id":"hillman-7-8-9-in-d-x-3-1-2-in-l-heat-treated-steel-hex-head-cap-screw","title":"HILLMAN 7\/8-9 in. D X 3-1\/2 in. L Heat Treated Steel Hex Head Cap Screw","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the HILLMAN 7\/8-9 in. D X 3-1\/2 in. L Heat Treated Steel Hex Head Cap Screw—built for serious strength in demanding metal-to-metal assemblies. Crafted from steel and heat-treated to Grade 8 standards, this fastener is designed to resist deformation under heavy loads, delivering dependable clamping power where it counts.\u003c\/p\u003e \u003ch3\u003eWhat makes this screw different\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eDiameter and thread\u003c\/strong\u003e: 7\/8 inch diameter with a 9 TPI coarse thread for quick, confident thread engagement in thick materials.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 3-1\/2 inches, providing ample bite for through-hole or thick components while maintaining a strong shank for shear resistance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHead style\u003c\/strong\u003e: Hex head for easy driving with standard wrenches or sockets, even in tighter spaces.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaterial and treatment\u003c\/strong\u003e: Heat-treated steel offers enhanced hardness and fatigue resistance, ideal for high-stress applications.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eGrade\u003c\/strong\u003e: Grade 8 construction delivers superior strength compared to common fasteners, reducing the risk of thread stripping in demanding environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoint type\u003c\/strong\u003e: Blunt tip designed for controlled alignment and clean entry in through-holes, minimizing misalignment during installation.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePackaging\u003c\/strong\u003e: Boxed packaging, with a 10-piece count, making it convenient to stock up for ongoing projects.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal uses and real‑world benefits\u003c\/h3\u003e\n\u003cp\u003eDesigned for serious projects that demand reliable performance, this Hillman hex head cap screw shines in:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eHeavy-duty frame and trailer components where thick metal members must be securely fastened.\u003c\/li\u003e \u003cli\u003eMachinery mounting, equipment housings, and industrial fixtures that require high clamp load and steadfast retention.\u003c\/li\u003e \u003cli\u003eFabrication or repair work on automotive and agricultural equipment where a robust, long-lasting fastener is essential.\u003c\/li\u003e \u003cli\u003eConstruction and shop fabrication tasks involving thick plates or structural members that benefit from Grade 8 strength.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePerformance you can trust\u003c\/h3\u003e\n\u003cp\u003eCompared with lower-grade fasteners, this Hillman screw delivers improved resistance to shear and tensile forces, helping you avoid premature wear and loosening over time. The combination of a coarse thread and blunt point makes installation faster and more forgiving in tougher materials, while the hex head enables secure, precise torque with common hand tools or impact drivers.\u003c\/p\u003e \u003ch3\u003ePractical tips for best results\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003ePair with compatible lock washers or anti-vibration solutions when vibration is a factor in your application.\u003c\/li\u003e \u003cli\u003eEnsure hole diameters and through-holes match your 7\/8\" diameter screw to optimize engagement and clamp load.\u003c\/li\u003e \u003cli\u003eUse the right torque range for Grade 8 steel to maximize clamping force without risking damage to threads.\u003c\/li\u003e \u003cli\u003eStore in the boxed packaging to preserve thread cleanliness and prevent damage during transit or storage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Hillman","offers":[{"title":"Default Title","offer_id":52197914444050,"sku":"5304944","price":73.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0928\/1024\/8466\/files\/5304944_A.eps_High.jpg?v=1776205286","url":"https:\/\/nationalhardwaregroup.com\/products\/hillman-7-8-9-in-d-x-3-1-2-in-l-heat-treated-steel-hex-head-cap-screw","provider":"National Hardware Group","version":"1.0","type":"link"}