{"product_id":"value-collection-581210br-hex-socket-cap-screw-1-3-8-6-unc","title":"Value Collection 581210BR Hex Socket Cap Screw 1-3\/8-6 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION 581210BR is a partially threaded hex socket cap screw engineered for high-strength fastening applications in industrial and mechanical assemblies. Sized at 1-3\/8-6 UNC with an 18-inch length under head, this fastener is driven with a 1-inch hex key and provides reliable clamping force in heavy-duty structural and machinery joints. The alloy steel construction delivers high tensile strength and resistance to shear loads. A black oxide coating offers mild corrosion resistance and reduced light reflection, making it suitable for both indoor and controlled-environment applications. Licensed tradespeople, machine builders, and maintenance mechanics are the primary installers.\u003c\/p\u003e\u003cp\u003eThis screw is suited for large-diameter fastening tasks in industrial machinery, heavy equipment, structural jigs, dies, molds, and fabricated steel assemblies. The partially threaded shank provides a smooth bearing surface through the clamped material and engages threads only in the tapped hole, which improves joint accuracy. The coarse 6 TPI UNC thread form offers strong engagement in steel tapped holes and resists cross-threading. Applications include press frames, conveyor systems, heavy fixtures, and similar large-format mechanical assemblies requiring controlled torque and precise clamp load.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eThread size 1-3\/8-6 UNC for high-load coarse-thread engagement\u003c\/li\u003e\n\u003cli\u003e18-inch length under head with partial threading for shank bearing surface\u003c\/li\u003e\n\u003cli\u003eAlloy steel construction for high tensile strength per ASTM A574\u003c\/li\u003e\n\u003cli\u003eBlack oxide finish provides mild corrosion resistance and low reflectivity\u003c\/li\u003e\n\u003cli\u003e1-inch hex drive compatible with standard hex keys and socket drivers\u003c\/li\u003e\n\u003cli\u003eMeets ASME\/ANSI B18.3 and ASTM A574 fastener standards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard ASME\/ANSI B18.3 hex socket cap screw for use in any 1-3\/8-6 UNC tapped hole requiring a partially threaded alloy steel fastener with a 1-inch internal hex drive.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation requires a calibrated 1-inch hex key or socket driver; use of an impact driver is not recommended without torque verification. Power down and de-energize or depressurize any system before fastener removal or installation in live mechanical assemblies. Follow applicable ASME and OSHA guidelines for torque procedures on large-diameter fasteners in structural joints. Inspect tapped hole threads for damage or contamination before installation to ensure full thread engagement.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1-3\/8-6 UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 18 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreading\u003c\/strong\u003e: Partially Threaded\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive Type\u003c\/strong\u003e: Hex\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive Size\u003c\/strong\u003e: 1 inch\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\/ANSI B18.3 and ASTM A574\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: VALUE COLLECTION\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 581210BR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51710624268594,"sku":"581210BR","price":130.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/269fd517df93b26f4ebc0e9979a6bd9a.jpg?v=1788468840","url":"https:\/\/voomisupply.com\/products\/value-collection-581210br-hex-socket-cap-screw-1-3-8-6-unc","provider":"Voomi Supply","version":"1.0","type":"link"}