{"product_id":"value-collection-581131pr-hex-socket-cap-screw-4-40-unc","title":"Value Collection 581131PR Hex Socket Cap Screw 4-40 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 581131PR is a 4-40 UNC hex socket cap screw designed for precision fastening in mechanical assemblies, fixtures, and equipment. The screw features a 1-3\/4 inch length under head and is partially threaded, providing a firm clamping surface in the unthreaded shank area. The 3\/32 inch hex drive accepts a standard Allen key or hex bit driver. Manufactured from alloy steel with a black oxide finish coating, this fastener delivers solid tensile strength and basic corrosion resistance for general industrial and maintenance applications. It is sized for small-diameter threaded work where torque requirements and space constraints demand a compact, recessed-head fastener.\u003c\/p\u003e\n\u003cp\u003eThis screw is suited for use in light machinery, instrument panels, jigs, fixtures, and electronic enclosures where 4-40 UNC threading is the specified standard. The hex socket drive is particularly useful in recessed or tight-clearance installations where a slotted or Phillips driver would not fit. Mechanical assemblers, maintenance technicians, and precision fabricators are the typical installers. This fastener is sold with a minimum order quantity of 100 pieces per order.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e4-40 UNC thread size for small-diameter precision fastening applications\u003c\/li\u003e\n  \u003cli\u003e1-3\/4 inch length under head with partial threading for improved clamping grip\u003c\/li\u003e\n  \u003cli\u003e3\/32 inch hex socket drive for use with standard Allen keys or hex bit drivers\u003c\/li\u003e\n  \u003cli\u003eAlloy steel construction meets ASME\/ANSI B18.3 and ASTM A574 fastener standards\u003c\/li\u003e\n  \u003cli\u003eBlack oxide finish coating provides basic 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 4-40 UNC hex socket cap screw for use in any application requiring this thread size and a recessed hex drive, conforming to ASME\/ANSI B18.3 dimensional standards.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by mechanical assemblers or maintenance technicians using a 3\/32 inch hex key or Allen-style driver. Ensure the mating threaded hole or nut is clean and free of debris before driving. Do not exceed the torque rating for 4-40 UNC alloy steel fasteners as specified in your engineering documentation. Apply thread-locking compound only when specified by the assembly design.\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: 1-3\/4 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\/32 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: 0.01 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: 581131PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51701905883442,"sku":"581131PR","price":10046.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/97b2ba4fb9a09cf8273e836099afb9f0.jpg?v=1788406705","url":"https:\/\/voomisupply.com\/products\/value-collection-581131pr-hex-socket-cap-screw-4-40-unc","provider":"Voomi Supply","version":"1.0","type":"link"}