{"product_id":"holo-krome-72018-hex-socket-cap-screw-4-40-unc-1-4-in","title":"Holo-krome 72018 Hex Socket Cap Screw 4-40 Unc 1\/4 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HOLO-KROME 72018 is a hex socket cap screw designed for precision fastening in tight spaces where a standard hex-head wrench cannot access. This screw features a 4-40 UNC thread and a 1\/4-inch length under head, making it suitable for small-assembly work in mechanical, electrical, and industrial enclosure applications. The alloy steel construction is finished with a black oxide coating, which provides mild corrosion resistance and reduces light reflection on the fastener head. Installation requires a 3\/32-inch hex socket drive. The fully threaded shank delivers consistent clamping force across the entire grip length.\u003c\/p\u003e\n\u003cp\u003eThis fastener is used in low-clearance assembly environments where socket-drive access is required. Common applications include instrument panels, electrical enclosures, small mechanical assemblies, and precision equipment housings. The 4-40 UNC thread is a standard fine-pitch size commonly specified in light-duty machine assembly, electronics mounting, and OEM equipment manufacturing. It is sized for installations where fastener mass and footprint must be minimized without sacrificing thread engagement integrity.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e4-40 UNC fully threaded shank for consistent thread engagement along the full length\u003c\/li\u003e\n  \u003cli\u003e1\/4-inch length under head for compact, low-profile installations\u003c\/li\u003e\n  \u003cli\u003e3\/32-inch hex socket drive for use in restricted-access locations\u003c\/li\u003e\n  \u003cli\u003eAlloy steel construction meets ASME B18.3 and ASTM A574 standards\u003c\/li\u003e\n  \u003cli\u003eBlack oxide finish provides mild corrosion resistance and a low-glare appearance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard 4-40 UNC hex socket cap screw conforming to ASME B18.3 and ASTM A574, suitable for use in any application specifying this thread size and drive type.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation requires a calibrated 3\/32-inch hex key or socket driver. Ensure mating threads are clean and free of debris before driving. Do not exceed the rated torque range for 4-40 alloy steel fasteners as specified by the applicable engineering standard or equipment manufacturer. Use of thread-locking compound should follow the assembly specification for the host equipment.\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\/4 inch\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 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreading\u003c\/strong\u003e: Fully 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\u003eWeight\u003c\/strong\u003e: 0.001 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: 72018\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HOLO-KROME","offers":[{"title":"Default Title","offer_id":51740569534770,"sku":"72018","price":6270.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2574eda559a8878b2bc689529998642d.jpg?v=1788825999","url":"https:\/\/voomisupply.com\/products\/holo-krome-72018-hex-socket-cap-screw-4-40-unc-1-4-in","provider":"Voomi Supply","version":"1.0","type":"link"}