{"product_id":"value-collection-581414pr-hex-socket-cap-screw-1-4-28-unf","title":"Value Collection 581414PR Hex Socket Cap Screw 1\/4-28 Unf","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 581414PR is a partially threaded hex socket cap screw engineered for high-strength fastening applications in mechanical assemblies. Manufactured from alloy steel with a black oxide finish, this fastener meets ASME\/ANSI B18.3 and ASTM A574 standards, making it suitable for demanding industrial and trade environments. It features a 1\/4-28 UNF thread size and a 5-inch length under head, driven by a 3\/16-inch hex socket key. The black oxide coating provides a baseline level of corrosion resistance while reducing light reflection on exposed fastener heads. Machinists, millwrights, and maintenance technicians working on precision equipment or structural assemblies are the typical installers.\u003c\/p\u003e\n\u003cp\u003eThis cap screw is suited for applications requiring fine-thread engagement, such as machine tool components, fixture plates, hydraulic manifolds, and other assemblies where vibration resistance and precise thread fit are critical. The 1\/4-28 UNF thread pitch provides tighter thread engagement than coarse-thread variants, making it preferable in thin-material applications or where repeated removal and reinstallation is expected. The partial threading allows for a smooth shank section to aid in alignment and load transfer through the shank body rather than the threaded portion alone.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eAlloy steel construction meets ASTM A574 high-strength cap screw requirements\u003c\/li\u003e\n  \u003cli\u003eConforms to ASME\/ANSI B18.3 dimensional standards for hex socket cap screws\u003c\/li\u003e\n  \u003cli\u003e1\/4-28 UNF fine thread for improved vibration resistance and precise fit\u003c\/li\u003e\n  \u003cli\u003ePartially threaded shank supports shear load transfer and alignment\u003c\/li\u003e\n  \u003cli\u003eBlack oxide finish for moderate corrosion resistance and low-glare appearance\u003c\/li\u003e\n  \u003cli\u003e3\/16-inch hex drive for use with standard hex key or socket tools\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-fit fastener for applications requiring a 1\/4-28 UNF partially threaded hex socket cap screw with a 5-inch length under head, conforming to ASME\/ANSI B18.3 and ASTM A574 standards.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified mechanic, machinist, or maintenance technician using an appropriate 3\/16-inch hex key or socket driver. Always de-energize and lock out equipment before fastener replacement in any powered assembly. Do not exceed the rated torque for a 1\/4-28 alloy steel cap screw as specified by the equipment manufacturer or applicable industry standards. Inspect the mating threaded hole for damage or contamination before installation to ensure full thread engagement.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-28 UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 5 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\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\u003eUNSPSC Code\u003c\/strong\u003e: 31161501\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 10\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: 581414PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51721766109490,"sku":"581414PR","price":3445.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/74c63c7bd1161aa55b0077a2353cf582.jpg?v=1788580507","url":"https:\/\/voomisupply.com\/products\/value-collection-581414pr-hex-socket-cap-screw-1-4-28-unf","provider":"Voomi Supply","version":"1.0","type":"link"}