{"product_id":"value-collection-mp39416-hex-head-cap-screw-1-2-20-x-4-in","title":"Value Collection MP39416 Hex Head Cap Screw 1\/2-20 X 4 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION MP39416 is a Grade 8 steel hex head cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. Sized at 1\/2-20 UNF thread with a 4-inch length under head, this fastener delivers the elevated tensile strength and hardness associated with Grade 8 classification. The zinc yellow dichromate finish provides corrosion resistance suitable for demanding service environments. Partial threading along the shank allows for precise clamping force and is standard for this length-to-diameter ratio. Manufactured to ASME B18.2.1 dimensional standards, this screw suits maintenance, repair, and fabrication professionals who require a reliable, spec-compliant fastener.\u003c\/p\u003e\n\u003cp\u003eThis hex head cap screw is appropriate for use in heavy equipment maintenance, machinery assembly, automotive drivetrain work, and structural steel connections where a fine-thread, high-strength fastener is specified. The 1\/2-20 UNF thread pitch is commonly selected when vibration resistance or higher thread engagement strength is required compared to coarse-thread alternatives. It is installed using standard hex tooling and is sold in a package quantity of 10, making it practical for small-batch repair jobs or stocking in a field service kit.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eGrade 8 steel construction for high tensile and proof load strength\u003c\/li\u003e\n  \u003cli\u003e1\/2-20 UNF fine thread for improved vibration resistance and thread engagement\u003c\/li\u003e\n  \u003cli\u003e4-inch length under head with partial threading along the shank\u003c\/li\u003e\n  \u003cli\u003eZinc yellow dichromate finish for corrosion protection in service environments\u003c\/li\u003e\n  \u003cli\u003eMeets ASME B18.2.1 dimensional standards for consistent fitment\u003c\/li\u003e\n  \u003cli\u003ePackage quantity of 10 per order unit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or maintenance fastener for any application specifying a 1\/2-20 UNF Grade 8 hex head cap screw with a 4-inch length under head and partial threading per ASME B18.2.1.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified mechanic or fabricator using the appropriate hex socket or open-end wrench sized for a 1\/2-inch fastener. De-energize or lock out any equipment before replacing structural or mechanical fasteners per applicable safety procedures. Apply thread lubricant or thread-locking compound only as specified by the equipment manufacturer. Do not exceed recommended torque values as stated in the equipment service documentation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/2-20\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: UNF\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\u003eStandard\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: MP39416\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51699188793650,"sku":"MP39416","price":32.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/51d98aad9aeefe876bd4752e57bfae43.jpg?v=1788373299","url":"https:\/\/voomisupply.com\/products\/value-collection-mp39416-hex-head-cap-screw-1-2-20-x-4-in","provider":"Voomi Supply","version":"1.0","type":"link"}