{"product_id":"value-collection-721030pr-flat-socket-cap-screw-4-40","title":"Value Collection 721030PR Flat Socket Cap Screw 4-40","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 721030PR is a flat socket cap screw designed for low-profile fastening applications in metal assemblies and precision mechanical work. It features a 4-40 UNC thread and measures 3\/16 inches in overall length. The 82-degree flat head countersinks flush with or below the surface, eliminating protrusions that could interfere with mating components. Drive engagement is through a 1\/16-inch hex socket, requiring an appropriately sized hex key or Allen driver. The screw is manufactured from alloy steel with a black oxide finish that provides moderate corrosion resistance and reduces light reflection. This part conforms to ASME\/ANSI B18.3 and ASTM F835 standards. Machinists, assembly technicians, and maintenance professionals typically install this fastener.\u003c\/p\u003e\n\u003cp\u003eThis screw is suited for tight-clearance installations where a standard socket cap head would protrude above the work surface. Common applications include instrument panels, fixture plates, jigs, machine guards, electronics enclosures, and general industrial assemblies requiring a flush or recessed fastener profile. The 4-40 thread size targets fine-pitch applications typical of light-gauge metal parts, thin panels, and small mechanical subassemblies. The fully threaded shank provides maximum thread engagement for the full grip length, which is advantageous in shallow-tapped holes common in this thread size range.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e82-degree flat head countersink profile for flush or below-surface installation\u003c\/li\u003e\n  \u003cli\u003e1\/16-inch hex socket drive for precise torque application in tight spaces\u003c\/li\u003e\n  \u003cli\u003eFully threaded shank maximizes thread engagement across the entire 3\/16-inch length\u003c\/li\u003e\n  \u003cli\u003eAlloy steel construction provides strength suitable for general industrial fastening\u003c\/li\u003e\n  \u003cli\u003eBlack oxide finish reduces surface reflectivity and offers mild corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eConforms to 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-dimension flat socket cap screw for use in any application requiring a 4-40 UNC thread with an 82-degree countersunk flat head per ASME\/ANSI B18.3 specifications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation requires a properly sized countersunk hole to match the 82-degree flat head geometry; verify the mating material is tapped or clearance-drilled to the correct 4-40 specification before driving. Use a calibrated 1\/16-inch hex key or Allen driver to avoid rounding the socket recess, particularly at this small drive size. De-energize or lock out any equipment before performing fastener installation or replacement in live assemblies. Follow applicable mechanical and electrical codes for the specific application and industry.\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 (Overall)\u003c\/strong\u003e: 3\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreading\u003c\/strong\u003e: Fully Threaded\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\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 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: 721030PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51709296443698,"sku":"721030PR","price":4515.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/85db4936e26adc43880dc17ef9da34e1.jpg?v=1788454140","url":"https:\/\/voomisupply.com\/products\/value-collection-721030pr-flat-socket-cap-screw-4-40","provider":"Voomi Supply","version":"1.0","type":"link"}