{"product_id":"holo-krome-73136-hex-socket-cap-screw-1-2-20-unf-alloy-steel","title":"Holo-krome 73136 Hex Socket Cap Screw 1\/2-20 Unf Alloy Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HOLO-KROME 73136 is a hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, industrial equipment, and trade installations. Threaded 1\/2-20 UNF and fully threaded along its 1-3\/4 inch length under head, this screw is driven with a 3\/8 inch hex key. The alloy steel construction with a black oxide finish provides corrosion resistance and maintains surface hardness in demanding environments. It meets ASME B18.3 and ASTM A574 standards, making it suitable for applications where tensile strength and dimensional consistency are required. HVAC, plumbing, and mechanical contractors use socket cap screws like this one in equipment mounting, panel assembly, and structural fastening work.\u003c\/p\u003e\n\u003cp\u003eThis screw is suited for use in tight-clearance installations where a standard hex head wrench cannot reach, as the recessed hex drive allows the fastener to sit flush or below the surface. Its fine UNF thread pitch provides stronger thread engagement in thinner materials and offers better resistance to loosening under vibration. Typical applications include equipment frames, motor mounts, valve bodies, and mechanical enclosures in both residential and light commercial service environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1\/2-20 UNF thread size for fine-pitch engagement and vibration resistance\u003c\/li\u003e\n  \u003cli\u003eFully threaded 1-3\/4 inch length under head for maximum thread contact\u003c\/li\u003e\n  \u003cli\u003e3\/8 inch hex socket drive for use in confined or recessed locations\u003c\/li\u003e\n  \u003cli\u003eAlloy steel construction meets ASTM A574 high-strength requirements\u003c\/li\u003e\n  \u003cli\u003eBlack oxide finish provides mild corrosion resistance and reduces light reflection\u003c\/li\u003e\n  \u003cli\u003eConforms to ASME B18.3 dimensional standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style and aftermarket replacement hex socket cap screw for mechanical assemblies requiring a 1\/2-20 UNF fully threaded fastener with a 3\/8 inch hex drive and ASME B18.3 dimensional compliance.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified mechanical, HVAC, plumbing, or electrical tradespeople using a calibrated torque wrench and the appropriate 3\/8 inch hex key or socket bit. Always de-energize equipment and relieve any system pressure before removing or replacing fasteners in pressurized or energized assemblies. Do not over-torque alloy steel socket cap screws, as stripping the drive socket or exceeding the material yield point can compromise joint integrity. Follow applicable ASME or equipment manufacturer torque guidelines for 1\/2-20 UNF alloy steel fasteners.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/2-20 UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 1-3\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull or Partial Threading\u003c\/strong\u003e: Fully Threaded\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive Type\u003c\/strong\u003e: Hex Socket\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive Size\u003c\/strong\u003e: 3\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Alloy Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish Coating\u003c\/strong\u003e: Black Oxide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: ASME B18.3 and ASTM A574\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31161501\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 50\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: HOLO-KROME\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 73136\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HOLO-KROME","offers":[{"title":"Default Title","offer_id":51739550023986,"sku":"73136","price":10384.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a2531ce66c563dad55d14ef866fdb673.jpg?v=1788816106","url":"https:\/\/voomisupply.com\/products\/holo-krome-73136-hex-socket-cap-screw-1-2-20-unf-alloy-steel","provider":"Voomi Supply","version":"1.0","type":"link"}