{"product_id":"value-collection-581389pr-hex-socket-cap-screw-1-4-20-unc","title":"Value Collection 581389PR Hex Socket Cap Screw 1\/4-20 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 581389PR is a hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, tooling, and industrial equipment. It features a 1\/4-20 UNC thread with a 7-inch length under the head and is partially threaded, allowing the unthreaded shank to bear shear loads in clearance-hole applications. The 3\/16-inch hex drive accepts a standard hex key or Allen-type bit driver. Constructed from alloy steel with a black oxide finish, the 581389PR delivers solid corrosion resistance and a clean, consistent appearance. Licensed tradespeople, machinists, and maintenance technicians working in fabrication, assembly, or equipment service will find this screw suited to demanding fastening needs.\u003c\/p\u003e\n\u003cp\u003eThis socket cap screw is intended for use in medium-to-heavy mechanical assemblies where a low-profile head and high clamping force are required. The partial threading makes it well-suited for applications where the bolt shank passes through a clearance hole before engaging a tapped bore, such as machine bases, fixtures, brackets, and structural joints. The black oxide alloy steel construction is appropriate for indoor and semi-protected environments where moderate corrosion resistance is acceptable.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1\/4-20 UNC thread for compatibility with standard tapped holes and nuts\u003c\/li\u003e\n  \u003cli\u003e7-inch length under head for deep-reach or thick-stack fastening\u003c\/li\u003e\n  \u003cli\u003ePartially threaded shank supports shear-load clearance-hole installations\u003c\/li\u003e\n  \u003cli\u003e3\/16-inch hex socket drive accepts standard hex keys and bit drivers\u003c\/li\u003e\n  \u003cli\u003eAlloy steel construction meets ASME\/ANSI B18.3 and ASTM A574 standards\u003c\/li\u003e\n  \u003cli\u003eBlack oxide finish provides mild corrosion resistance and reduced light reflection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard 1\/4-20 UNC hex socket cap screw conforming to ASME\/ANSI B18.3 and ASTM A574, suitable for use in any tapped or through-hole assembly that accepts a 1\/4-20 thread pattern and a 3\/16-inch hex drive.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by machinists, millwrights, or maintenance technicians using a 3\/16-inch hex key or Allen bit driver. Ensure the mating tapped hole is clean and free of debris before driving the screw. Power down and de-energize any equipment before fastener service on live machinery. Do not exceed the torque capacity of the thread or the drive socket, and inspect threads for damage before reinstallation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-20 UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 7 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 Socket\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive Size\u003c\/strong\u003e: 3\/16 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\/ANSI B18.3, ASTM A574\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.14 pounds\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: VALUE COLLECTION\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 581389PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51690843865394,"sku":"581389PR","price":1945.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c72895fcc1c5b42fd501f8b5f2c4fe04.jpg?v=1788276157","url":"https:\/\/voomisupply.com\/products\/value-collection-581389pr-hex-socket-cap-screw-1-4-20-unc","provider":"Voomi Supply","version":"1.0","type":"link"}