{"product_id":"value-collection-33643-hex-socket-cap-screw-3-8-16-unc","title":"Value Collection 33643 Hex Socket Cap Screw 3\/8-16 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION 33643 is a partially threaded hex socket cap screw designed for secure, high-torque fastening in demanding mechanical and structural applications. It features a 3\/8-16 UNC thread size with a 4-inch length under the head and is driven by a 5\/16-inch hex key. Constructed from alloy steel with a black oxide finish, this fastener delivers solid tensile strength and moderate corrosion resistance. It conforms to ASME\/ANSI B18.3 and ASTM A574 standards, making it a recognized choice for precision fastening work in trade and industrial settings.\u003c\/p\u003e\u003cp\u003eThis cap screw is suited for mechanical assemblies, machinery maintenance, jig and fixture work, and general industrial fabrication where a recessed-drive, high-strength fastener is required. The partial threading allows the unthreaded shank to act as a shoulder, providing precise locating and shear resistance. It is commonly installed by millwrights, maintenance technicians, and pipefitters working on equipment assemblies and structural connections.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e3\/8-16 UNC thread for broad compatibility with standard inch-thread tapped holes\u003c\/li\u003e\n\u003cli\u003e4-inch length under head with partial threading for shear load and locating applications\u003c\/li\u003e\n\u003cli\u003e5\/16-inch hex drive for use with standard hex keys and T-handle drivers\u003c\/li\u003e\n\u003cli\u003eAlloy steel construction meets ASTM A574 high-strength fastener requirements\u003c\/li\u003e\n\u003cli\u003eBlack oxide coating provides mild corrosion resistance and reduces light glare on exposed fasteners\u003c\/li\u003e\n\u003cli\u003eConforms to ASME\/ANSI B18.3 dimensional standards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or standard fastener for any application requiring a 3\/8-16 UNC partially threaded hex socket cap screw meeting ASME\/ANSI B18.3 and ASTM A574 specifications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation requires a properly sized 5\/16-inch hex key or Allen driver. Ensure the mating tapped hole is clean and free of debris before threading. Power down and de-energize any associated equipment before fastener replacement or assembly work. Do not exceed the rated torque for 3\/8-16 alloy steel fasteners as specified in your equipment service documentation.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3\/8-16 UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive Type\u003c\/strong\u003e: Hex\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive Size\u003c\/strong\u003e: 5\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreading\u003c\/strong\u003e: Partially 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\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\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: 33643\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51704253219122,"sku":"33643","price":30.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0b024031ba426e731ae1b1afb2c0c990.jpg?v=1788421491","url":"https:\/\/voomisupply.com\/products\/value-collection-33643-hex-socket-cap-screw-3-8-16-unc","provider":"Voomi Supply","version":"1.0","type":"link"}