{"product_id":"holo-krome-720000270-hex-socket-cap-screw-4-40-unc","title":"Holo-krome 720000270 Hex Socket Cap Screw 4-40 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HOLO-KROME 720000270 is a hex socket cap screw designed for precision fastening in demanding mechanical assemblies. Threaded to the 4-40 UNC standard, this fastener features a 3\/32-inch hex drive socket and a 1-1\/4-inch length under head with partial threading. Constructed from alloy steel and finished with a black oxide coating, it delivers solid corrosion resistance and maintains dimensional accuracy under torque load. This screw conforms to ASME B18.3 and ASTM A574 standards, making it suitable for applications where mechanical strength and consistent fitment are required. It is commonly installed by mechanical technicians, maintenance professionals, and precision assembly tradespeople.\u003c\/p\u003e\n\u003cp\u003eThis fastener is well suited for light-gauge metal assemblies, precision instruments, HVAC control panels, electrical enclosures, and other applications that require a compact, high-strength socket cap screw in the 4-40 UNC thread size. The black oxide finish makes it appropriate for indoor and semi-protected environments where appearance and moderate corrosion resistance are both considerations. Partial threading ensures proper clamping force in standard through-hole and tapped-hole configurations.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e4-40 UNC thread size for compatibility with fine-thread tapped holes in thin materials\u003c\/li\u003e\n  \u003cli\u003e3\/32-inch hex socket drive for use with standard hex keys and Allen wrenches\u003c\/li\u003e\n  \u003cli\u003e1-1\/4-inch length under head with partial threading for proper clamp load\u003c\/li\u003e\n  \u003cli\u003eAlloy steel construction meets ASTM A574 mechanical strength requirements\u003c\/li\u003e\n  \u003cli\u003eBlack oxide finish provides corrosion inhibition and reduced light reflection\u003c\/li\u003e\n  \u003cli\u003eConforms to ASME B18.3 dimensional standard for socket cap screws\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or standard-service fastener for any application requiring a 4-40 UNC partially threaded hex socket cap screw conforming to ASME B18.3 and ASTM A574.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified mechanical technician using a calibrated 3\/32-inch hex key or Allen driver. Ensure the receiving tapped hole is clean and free of debris before threading. Do not exceed the rated drive engagement depth, and avoid over-torquing, which can strip threads in fine-pitch 4-40 tapped holes. Consult applicable mechanical or equipment standards for torque guidelines specific to the assembly.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 4-40 UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 1-1\/4 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: 3\/32 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 B18.3, ASTM A574\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: 0.03 pounds\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: 720000270\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HOLO-KROME","offers":[{"title":"Default Title","offer_id":51743801147698,"sku":"720000270","price":6889.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/755ea449ce00f53d9438a7918c08d982.jpg?v=1788849795","url":"https:\/\/voomisupply.com\/products\/holo-krome-720000270-hex-socket-cap-screw-4-40-unc","provider":"Voomi Supply","version":"1.0","type":"link"}