{"product_id":"value-collection-307042pr-hex-socket-cap-screw-4-40-unc","title":"Value Collection 307042PR Hex Socket Cap Screw 4-40 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION 307042PR is a hex socket cap screw designed for secure fastening in precision assemblies where torque must be applied through an internal hex drive. Sized at 4-40 UNC with a 3\/8 inch length under head, this screw is fully threaded and machined from alloy steel with a black oxide finish. The black oxide coating provides mild corrosion resistance and reduces light reflection in finished assemblies. With a 5\/64 inch hex drive size, it is tightened using a standard hex key or Allen driver. This fastener meets ASTM A574 specifications, making it appropriate for structural and mechanical fastening applications.\u003c\/p\u003e\u003cp\u003eThis screw is suited for use in light mechanical assemblies, electronics enclosures, jigs and fixtures, and precision instrument work where a low-profile socket cap head is required. The 4-40 UNC thread is common in small-scale mechanical and electrical assembly, including panel mounting and component securing in both industrial and commercial settings. Installation is typically performed by machinists, maintenance technicians, or assembly personnel.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e4-40 UNC thread size for fine-pitch small fastener applications\u003c\/li\u003e\n\u003cli\u003e3\/8 inch length under head, fully threaded for maximum thread engagement\u003c\/li\u003e\n\u003cli\u003e5\/64 inch internal hex drive for use with standard hex keys\u003c\/li\u003e\n\u003cli\u003eAlloy steel construction meets ASTM A574 fastener standard\u003c\/li\u003e\n\u003cli\u003eBlack oxide finish for mild corrosion resistance and reduced reflectivity\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or standard-fit hex socket cap screw for any 4-40 UNC threaded application requiring a 3\/8 inch fully threaded alloy steel fastener.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation requires a 5\/64 inch hex key or Allen driver. Ensure the mating threaded hole is clean and free of debris before driving the screw. Power down any electrical equipment before fastening components within energized enclosures. Follow applicable mechanical assembly standards and torque practices appropriate to the material and joint being secured.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\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: 3\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreading\u003c\/strong\u003e: Fully Threaded\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive Type\u003c\/strong\u003e: Hex (Internal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive Size\u003c\/strong\u003e: 5\/64 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: ASTM A574\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 307042PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51715062956338,"sku":"307042PR","price":877.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c3d4393290d1151337a0e6cc1706718c_5aa27613-46f5-4cd3-8b0f-2288082ad6b8.jpg?v=1788509448","url":"https:\/\/voomisupply.com\/products\/value-collection-307042pr-hex-socket-cap-screw-4-40-unc","provider":"Voomi Supply","version":"1.0","type":"link"}