{"product_id":"value-collection-581117pr-hex-socket-cap-screw-4-40-unc","title":"Value Collection 581117PR Hex Socket Cap Screw 4-40 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 581117PR is a 4-40 UNC hex socket cap screw designed for precision fastening in tight clearance applications. It features a 3\/32 inch hex drive and measures 5\/16 inches under the head, with fully threaded engagement along the entire shaft. Manufactured from alloy steel with a black oxide coating, it delivers solid tensile strength and moderate corrosion resistance in controlled environments. Machinists, assembly technicians, and maintenance professionals use this fastener where a socket-drive cap screw is required at the small 4-40 thread size.\u003c\/p\u003e\n\u003cp\u003eThis screw is suited for light-duty mechanical assemblies, instrument enclosures, electronics chassis, and precision equipment requiring a compact, low-profile cap screw. The 4-40 UNC thread is a common standard in instrumentation, HVAC control panels, and small-equipment manufacturing. The black oxide finish is appropriate for indoor or protected environments where mild corrosion resistance meets aesthetic requirements. Full threading provides maximum thread engagement across short fastener lengths.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e4-40 UNC thread for standard small-fastener applications in precision assemblies\u003c\/li\u003e\n  \u003cli\u003e5\/16 inch length under head with fully threaded shank for complete thread engagement\u003c\/li\u003e\n  \u003cli\u003e3\/32 inch hex socket drive for use with Allen or hex key tooling\u003c\/li\u003e\n  \u003cli\u003eAlloy steel construction meets ASME\/ANSI B18.3 and ASTM A574 standards\u003c\/li\u003e\n  \u003cli\u003eBlack oxide coating 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 an OEM-style replacement or stock fastener for any assembly requiring a 4-40 UNC hex socket cap screw with a 5\/16 inch under-head length and 3\/32 inch drive.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed using a 3\/32 inch hex key or Allen driver. Ensure mating threads are clean and free of debris before driving. Apply appropriate thread-locking compound if vibration resistance is required by the application. Follow torque specifications listed in the relevant ASME or equipment manufacturer guidelines for 4-40 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: 4-40 UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 5\/16 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\/32 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreading\u003c\/strong\u003e: Fully Threaded\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: 0.00131 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: 581117PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51694156677426,"sku":"581117PR","price":1268.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d473b6c073dfb95c52e449fe7f3d0810.jpg?v=1788321015","url":"https:\/\/voomisupply.com\/products\/value-collection-581117pr-hex-socket-cap-screw-4-40-unc","provider":"Voomi Supply","version":"1.0","type":"link"}