{"product_id":"holo-krome-79040-hex-socket-cap-screw-1-4-28-unf-ss-18-8","title":"Holo-krome 79040 Hex Socket Cap Screw 1\/4-28 Unf Ss 18-8","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HOLO-KROME 79040 is a hex socket cap screw designed for precision fastening in mechanical, plumbing, and industrial assemblies. It features a 1\/4-28 UNF thread  -  a fine-pitch thread pattern suited for applications requiring tighter thread engagement and vibration resistance. The screw is fully threaded along its 1-inch length under head and accepts a 3\/16-inch hex drive. Constructed from 18-8 stainless steel with a bright uncoated finish, it delivers solid corrosion resistance in moderate-exposure environments. This fastener meets ASME B18.3, ASTM A574, and ASTM F837 standards, making it appropriate for specification-driven work where dimensional and material compliance is required.\u003c\/p\u003e\n\u003cp\u003eThis screw is commonly used in equipment assemblies, valve bodies, pump housings, panel mounting, and other mechanical sub-assemblies where a fine-thread socket cap fastener is specified. The 1\/4-28 UNF thread is a standard fine-pitch size found across HVAC, plumbing, and light industrial equipment. The 18-8 stainless steel construction makes it suitable for indoor and moderate-moisture environments. Licensed tradespeople and maintenance technicians installing or servicing equipment with hex socket fasteners will find this a straightforward replacement or new-install option.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1\/4-28 UNF fine-pitch thread for tighter engagement and improved vibration resistance\u003c\/li\u003e\n  \u003cli\u003eFully threaded 1-inch length under head for maximum thread engagement across material thickness\u003c\/li\u003e\n  \u003cli\u003e3\/16-inch hex socket drive compatible with standard hex keys and T-handle drivers\u003c\/li\u003e\n  \u003cli\u003e18-8 stainless steel construction for corrosion resistance in moderate-exposure environments\u003c\/li\u003e\n  \u003cli\u003eBright uncoated finish  -  no coating buildup to interfere with thread fit or torque values\u003c\/li\u003e\n  \u003cli\u003eMeets ASME B18.3, ASTM A574, and ASTM F837 dimensional and material standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard 1\/4-28 UNF hex socket cap screw per ASME B18.3. Fits any application specifying a 1\/4-28 UNF fully threaded socket cap screw with a 3\/16-inch hex drive in stainless steel 18-8.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall with a 3\/16-inch hex key, T-handle driver, or hex bit on a torque wrench. De-energize and depressurize any equipment before accessing fastened assemblies. Apply anti-seize compound when threading stainless fasteners into stainless tapped holes to prevent galling. Follow applicable mechanical or equipment specifications for torque requirements  -  do not over-torque fine-thread stainless hardware.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-28 UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreading\u003c\/strong\u003e: Fully 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: 3\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Stainless Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: 18-8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Bright \/ Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ASME B18.3, ASTM A574, ASTM F837\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31161501\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: HOLO-KROME\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 79040\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HOLO-KROME","offers":[{"title":"Default Title","offer_id":51743893389618,"sku":"79040","price":12571.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/83bce3e4a7b0f6af6dbb3ee971889af3.jpg?v=1788850971","url":"https:\/\/voomisupply.com\/products\/holo-krome-79040-hex-socket-cap-screw-1-4-28-unf-ss-18-8","provider":"Voomi Supply","version":"1.0","type":"link"}