{"product_id":"value-collection-581412pr-hex-socket-cap-screw-1-4-28-unf","title":"Value Collection 581412PR Hex Socket Cap Screw 1\/4-28 Unf","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION 581412PR is a partially threaded hex socket cap screw designed for high-strength fastening applications. It carries a 1\/4-28 UNF thread size and measures 4-1\/2 inches in length under the head. The 3\/16-inch hex drive socket accepts a standard Allen or hex key for installation and removal. Constructed from alloy steel with a black oxide finish, this fastener delivers solid corrosion resistance in moderate environments while maintaining the high tensile strength required for mechanical assemblies. It meets ASME\/ANSI B18.3 and ASTM A574 standards, making it appropriate for structural and precision fastening work across industrial and mechanical trade applications.\u003c\/p\u003e\u003cp\u003eThis screw is suited for use in machine assemblies, tooling fixtures, and mechanical components where a recessed drive fastener is needed to keep a clean surface profile. The fine 28-thread-per-inch pitch provides precise torque control and improved resistance to loosening under vibration, making it a common choice in applications where standard coarse-thread fasteners are not appropriate. Machinists, millwrights, and maintenance technicians typically install this fastener in steel and aluminum components.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1\/4-28 UNF fine thread for vibration resistance and precise torque control\u003c\/li\u003e\n\u003cli\u003e4-1\/2 inch length under head suits deep fastening applications\u003c\/li\u003e\n\u003cli\u003e3\/16 inch hex socket drive for use with standard Allen keys or hex drivers\u003c\/li\u003e\n\u003cli\u003eAlloy steel construction meets ASTM A574 high-strength fastener requirements\u003c\/li\u003e\n\u003cli\u003eBlack oxide finish provides moderate corrosion resistance and reduced light reflection\u003c\/li\u003e\n\u003cli\u003eConforms to ASME\/ANSI B18.3 dimensional standards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-use fastener for mechanical assemblies requiring a 1\/4-28 UNF partially threaded hex socket cap screw per ASME\/ANSI B18.3 specifications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed with a 3\/16-inch hex key or Allen driver. Always power down or de-energize equipment before accessing fastened assemblies. Apply appropriate thread-locking compound or torque per the equipment manufacturer specifications for your specific application. Verify mating thread condition before installation to avoid cross-threading or galling in tight-tolerance bores.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-28 UNF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 4-1\/2 inches\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\u003eThreading\u003c\/strong\u003e: Partially Threaded\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Alloy Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\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\u003ePackage Weight\u003c\/strong\u003e: 9.93 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: 581412PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51690507075890,"sku":"581412PR","price":2801.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/4c1692f9efb5bb2cf00991498784034e.jpg?v=1788270739","url":"https:\/\/voomisupply.com\/products\/value-collection-581412pr-hex-socket-cap-screw-1-4-28-unf","provider":"Voomi Supply","version":"1.0","type":"link"}