{"product_id":"hillman-5-8-in-d-x-5-1-2-in-l-heat-treated-zinc-steel-hex-head-cap-screw-25-pk","title":"HILLMAN 5\/8 in. D X 5-1\/2 in. L Heat Treated Zinc Steel Hex Head Cap Screw 25 pk","description":"\u003cdiv\u003e\n\u003cp\u003eHillman’s 5\/8 in. D x 5-1\/2 in. L Heat Treated Zinc Steel Hex Head Cap Screw delivers dependable, heavy-duty fastening for demanding projects. This 25-pack boxed set combines strength, durability, and convenient packaging for builders, woodworkers, and fabricators who demand consistent performance from every screw.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter\u003c\/strong\u003e: 5\/8 in (major diameter) for robust, high-load connections\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 5-1\/2 in, providing substantial engagement in thick materials\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial \u0026amp; Finish\u003c\/strong\u003e: Heat-treated zinc-coated steel for improved hardness, wear resistance, and corrosion protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade\u003c\/strong\u003e: 5, a proven standard for strong, reliable fasteners in heavy-duty assemblies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: Coarse thread for quick, versatile engagement in a variety of components\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Type\u003c\/strong\u003e: Hex head designed for solid, accessible driving with common wrenches or sockets\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity\u003c\/strong\u003e: 25 pieces, boxed for organized storage and ready-to-use projects\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal applications\u003c\/h3\u003e\n\u003cp\u003ePerfect for heavy-duty woodworking, equipment mounting, structural framing, and assembly tasks where a long, strong fastener is required. Use these screws to secure thick lumber, mount machinery components, or join metal brackets to wood where high clamp load is essential. The heat-treated core and zinc finish help maintain performance in indoor environments and moderate outdoor use.\u003c\/p\u003e \u003ch3\u003eWhat sets this apart\u003c\/h3\u003e\n\u003cp\u003eUnlike standard fasteners, these Hillman hex head cap screws combine heat-treated hardness with a protective zinc coating, delivering enhanced wear resistance and long-term durability. The 5\/8 in. diameter paired with a 5-1\/2 in. length creates a robust fastening solution that holds tight under vibration and dynamic loads, while the coarse threads offer strong bite in a range of materials without requiring precision tapping.\u003c\/p\u003e \u003ch3\u003ePractical tips for use\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePair with compatible hex nuts and washers when threading into assemblies that require nut engagement or load distribution.\u003c\/li\u003e\n\u003cli\u003eEnsure sufficient thread engagement in mating components to achieve optimal holding power without over-tightening.\u003c\/li\u003e\n\u003cli\u003eStore the boxed 25-pack in a dry, organized space to prevent rust and keep fasteners readily accessible for future projects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Hillman","offers":[{"title":"Default Title","offer_id":52171865194770,"sku":"57488","price":85.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0928\/1024\/8466\/files\/57488_LA.eps_High.jpg?v=1775503295","url":"https:\/\/nationalhardwaregroup.com\/products\/hillman-5-8-in-d-x-5-1-2-in-l-heat-treated-zinc-steel-hex-head-cap-screw-25-pk","provider":"National Hardware Group","version":"1.0","type":"link"}