{"product_id":"armor-coat-ust235949-hex-socket-cap-screw-5-16-18","title":"Armor Coat UST235949 Hex Socket Cap Screw 5\/16-18","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ARMOR COAT UST235949 is a hex socket cap screw designed for high-strength fastening applications in mechanical, industrial, and trade installations. Sized at 5\/16-18 UNC with a 3.25-inch length under head, this screw is partially threaded and manufactured from alloy steel with an Armor Coat finish for corrosion resistance. The 1\/4-inch hex drive accepts standard hex keys and Allen drivers. It conforms to ASME B18.3, the recognized standard for socket cap screws in the United States. Mechanical contractors, pipefitters, millwrights, and industrial maintenance technicians commonly specify this fastener where controlled torque and flush or recessed head clearance are required.\u003c\/p\u003e\u003cp\u003eThis fastener suits structural and mechanical assemblies that call for a 5\/16-18 UNC thread engagement with partial threading along the shank. The partial thread design allows the unthreaded shank to bear shear loads, making it appropriate for applications where both tensile and shear forces are present. It is well suited for equipment mounting, bracket attachment, and panel or enclosure assembly in commercial and light industrial environments where an Armor Coat finish provides added protection against moisture and mild chemical exposure.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e5\/16-18 UNC thread size for broad tooling and hardware compatibility\u003c\/li\u003e\n\u003cli\u003e3.25-inch length under head with partial threading for combined shear and tensile load bearing\u003c\/li\u003e\n\u003cli\u003e1\/4-inch hex socket drive for use with standard hex keys and T-handle drivers\u003c\/li\u003e\n\u003cli\u003eAlloy steel construction provides high tensile and yield strength\u003c\/li\u003e\n\u003cli\u003eArmor Coat finish adds corrosion resistance over bare alloy steel\u003c\/li\u003e\n\u003cli\u003eConforms to ASME B18.3 dimensional and performance standards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard ASME B18.3 hex socket cap screw for use in any application calling for a 5\/16-18 UNC partially threaded socket cap screw with a 1\/4-inch drive.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation requires a 1\/4-inch hex key or Allen driver; use a torque wrench with the appropriate hex bit adapter when a specific torque value is required by the equipment manufacturer. Ensure mating threads are clean and free of debris before installation. Minimum order quantity is 50 pieces per order. Follow applicable mechanical codes and equipment manufacturer guidelines for fastener seating and preload requirements.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/16-18 UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 3.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreading\u003c\/strong\u003e: Partially Threaded\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: 1\/4 inch\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: Armor Coat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: ASME B18.3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31161501\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.007 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: ARMOR COAT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: UST235949\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ARMOR COAT","offers":[{"title":"Default Title","offer_id":67909334106418,"sku":"UST235949","price":10861.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1b713819eaa4c48166b78fa747a38153_a3ecbd0b-3723-4a62-96d3-8738feac5e84.jpg?v=1791186413","url":"https:\/\/voomisupply.com\/products\/armor-coat-ust235949-hex-socket-cap-screw-5-16-18","provider":"Voomi Supply","version":"1.0","type":"link"}