{"product_id":"value-collection-211020pr-flat-socket-cap-screw-4-40","title":"Value Collection 211020PR Flat Socket Cap Screw 4-40","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 211020PR is a flat socket cap screw designed for applications requiring a flush or countersunk fastener profile. It features an 82-degree flat head driven by a 1\/16-inch hex socket, making it suitable for tight-clearance installations where a low-profile head is essential. Machined from alloy steel with a black oxide finish, it offers improved corrosion resistance and reduced light reflection. The screw is fully threaded at a 4-40 UNC thread specification and measures 5\/8 inches in overall length. Licensed tradespeople and assembly technicians working on mechanical, industrial, or precision equipment installations are the primary users of this fastener.\u003c\/p\u003e\n\u003cp\u003eThis screw is appropriate for light-duty mechanical assemblies, jigs, fixtures, electronic enclosures, and precision instrument housings where a flush fastener surface is required. The 4-40 thread size is common in small-frame applications including electrical components, panel hardware, and instrumentation. The black oxide finish blends into dark substrates and provides a measure of surface protection in dry or mildly humid environments. Fully threaded construction ensures maximum thread engagement across the full fastener length, which is particularly useful in thin-material applications.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e82-degree flat head profile for flush or countersunk seating\u003c\/li\u003e\n  \u003cli\u003e1\/16-inch hex socket drive for precise torque application in confined spaces\u003c\/li\u003e\n  \u003cli\u003eFully threaded along entire 5\/8-inch length for maximum thread engagement\u003c\/li\u003e\n  \u003cli\u003eAlloy steel construction for strength in small-diameter fastener applications\u003c\/li\u003e\n  \u003cli\u003eBlack oxide finish for surface protection and low-reflectance appearance\u003c\/li\u003e\n  \u003cli\u003eMeets ASME\/ANSI B18.3 and ASTM F835 fastener standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard inch-series flat socket cap screw compatible with 4-40 UNC threaded holes in metal, plastic, and composite assemblies requiring a countersunk fastener per ASME\/ANSI B18.3.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified mechanic, assembler, or technician using a properly sized 1\/16-inch hex key or Allen driver. Ensure the mating threaded hole or insert is clean and free of debris before driving the fastener. Use a countersink bit matched to the 82-degree head angle to prepare receiving holes in non-pre-machined material. Do not exceed the rated drive engagement to avoid stripping the hex socket on this small-diameter fastener.\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\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 5\/8 inches (overall)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Type\u003c\/strong\u003e: 82-degree Flat\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: 1\/16 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\u003c\/strong\u003e: Black Oxide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: ASME\/ANSI B18.3, ASTM F835\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: 211020PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51697556029746,"sku":"211020PR","price":1477.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/66bb5ca07737b5725a29f856d1c94541.jpg?v=1788352795","url":"https:\/\/voomisupply.com\/products\/value-collection-211020pr-flat-socket-cap-screw-4-40","provider":"Voomi Supply","version":"1.0","type":"link"}