{"product_id":"value-collection-mp39066-hex-head-cap-screw-3-8-16-x-4-in","title":"Value Collection MP39066 Hex Head Cap Screw 3\/8-16 X 4 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION MP39066 is a Grade 8 steel hex head cap screw sized 3\/8-16 x 4 inches, finished in zinc yellow dichromate for corrosion resistance. The partially threaded shank follows ASME B18.2.1 dimensional standards, making it a recognized specification fastener suited for structural and mechanical assemblies. The UNC (Unified National Coarse) thread form provides strong thread engagement in steel, cast iron, and similar base materials. Grade 8 designation indicates a high-strength alloy steel fastener capable of handling significant tensile and shear loads. This screw is a common choice for maintenance, fabrication, and equipment assembly work across mechanical and industrial trades.\u003c\/p\u003e\n\u003cp\u003eThis fastener is appropriate for general mechanical assembly, equipment mounting, structural connections, and repair applications where a high-strength coarse-thread cap screw is required. The 4-inch length under head suits thicker material stacks and through-bolted connections. The zinc yellow dichromate finish provides moderate corrosion resistance for indoor and light-duty outdoor use. Sold in packages of 10, this screw suits maintenance shops, field service technicians, and fabricators who need a reliable Grade 8 fastener on hand for a variety of tasks.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eGrade 8 steel construction for high tensile strength in demanding assemblies\u003c\/li\u003e\n  \u003cli\u003e3\/8-16 UNC thread form for broad compatibility with standard nuts and tapped holes\u003c\/li\u003e\n  \u003cli\u003e4-inch length under head accommodates thicker material stacks and through-bolt applications\u003c\/li\u003e\n  \u003cli\u003ePartially threaded shank allows for precise clamping and shear load handling\u003c\/li\u003e\n  \u003cli\u003eZinc yellow dichromate finish provides corrosion resistance over bare steel\u003c\/li\u003e\n  \u003cli\u003eMeets ASME B18.2.1 dimensional standards for consistent fit and interchangeability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with standard 3\/8-16 UNC hex nuts, flat washers, lock washers, and tapped holes conforming to Unified National Coarse thread specifications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed with a standard hex wrench or socket drive sized for a 3\/8-inch hex head cap screw. Always ensure the mating thread or nut matches the 3\/8-16 UNC specification before installation. Follow applicable torque guidelines for Grade 8 fasteners as specified by the equipment manufacturer or relevant ASME or SAE standards. Inspect threads for damage before installation and do not over-torque, as this can yield or fracture the fastener.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3\/8-16\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC (Unified National Coarse)\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: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: Grade 8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc Yellow Dichromate\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensional Standard\u003c\/strong\u003e: ASME B18.2.1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 10\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: MP39066\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51699936231730,"sku":"MP39066","price":17.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c9d5d013481a2da06609b5716e9ed11e.jpg?v=1788383646","url":"https:\/\/voomisupply.com\/products\/value-collection-mp39066-hex-head-cap-screw-3-8-16-x-4-in","provider":"Voomi Supply","version":"1.0","type":"link"}