{"product_id":"value-collection-33643-1-hex-socket-cap-screw-3-8-16-unc","title":"Value Collection -33643-1 Hex Socket Cap Screw 3\/8-16 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION -33643-1 is a partially threaded hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, fixtures, and structural connections. It features a 3\/8-16 UNC thread size and a 4.5-inch length under head, providing deep thread engagement for secure clamping. The 5\/16-inch hex drive accepts a standard Allen key or hex bit. Manufactured from alloy steel with a black oxide finish, this fastener resists corrosion and surface wear under typical shop and field conditions. It meets ASME\/ANSI B18.3 and ASTM A574 standards, making it appropriate for demanding mechanical and industrial installations.\u003c\/p\u003e\u003cp\u003eThis screw is suited for use in general industrial equipment, machinery frames, jigs, fixtures, and fabricated assemblies where a recessed-drive, high-strength cap screw is required. The partial threading allows the unthreaded shank to bear shear loads, which is useful in precision alignment applications. This fastener is a stock item commonly used by machinists, millwrights, maintenance technicians, and fabricators working across both light and heavy industrial environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e3\/8-16 UNC thread size for standard inch-series fastener compatibility\u003c\/li\u003e\n\u003cli\u003e4.5-inch length under head for deep material engagement\u003c\/li\u003e\n\u003cli\u003ePartially threaded shank to support shear load and alignment functions\u003c\/li\u003e\n\u003cli\u003e5\/16-inch hex socket drive for Allen key or hex bit installation\u003c\/li\u003e\n\u003cli\u003eAlloy steel construction with black oxide coating for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eMeets ASME\/ANSI B18.3 and ASTM A574 standards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or stock fastener for general industrial and mechanical assemblies requiring a 3\/8-16 UNC partially threaded hex socket cap screw.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation requires a 5\/16-inch hex key or socket bit driver. Ensure mating threaded holes are clean and free of debris before driving. Follow applicable torque specifications from the equipment manufacturer or relevant ASME standards for alloy steel fasteners of this size grade. De-energize and lock out any equipment before performing fastener service on live machinery.\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: 4.5 inches\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: 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 and 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: -33643-1\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51720202486066,"sku":"-33643-1","price":20.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/14742b99bedf608a59829c4a42cd3fa7.jpg?v=1788561526","url":"https:\/\/voomisupply.com\/products\/value-collection-33643-1-hex-socket-cap-screw-3-8-16-unc","provider":"Voomi Supply","version":"1.0","type":"link"}