{"product_id":"holo-krome-65018-button-socket-cap-screw-1-4-28","title":"Holo-krome 65018 Button Socket Cap Screw 1\/4-28","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HOLO-KROME 65018 is a button head socket cap screw designed for applications requiring a low-profile fastening solution with high strength. It features a 1\/4-28 UNF thread and measures 1\/2 inch in length under the head. The screw is fully threaded and manufactured from alloy steel with a black oxide finish, providing corrosion resistance in light-duty environments. A 5\/32-inch hex socket drive is required for installation. It meets ANSI\/ASME B18.3 and ASTM F835 fastener standards, with a hardness rating of 38 HRC and a Thread Fit Class of 3A. This part is typically installed by maintenance technicians, machinists, and field service professionals.\u003c\/p\u003e\n\u003cp\u003eThe HOLO-KROME 65018 is suited for mechanical assemblies where a standard hex cap screw head would create clearance issues. The low-profile button head reduces the overall protrusion above the mating surface. Common applications include machinery panels, equipment enclosures, jigs, fixtures, and structural assemblies requiring a fine-thread fastener. The right-hand thread direction and 3A thread fit class make this screw compatible with standard tapped holes in the 1\/4-28 UNF specification.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eLow-profile button head with 0.437-inch head diameter and 0.132-inch head height for clearance-sensitive assemblies\u003c\/li\u003e\n  \u003cli\u003eAlloy steel construction with 38 HRC hardness for high tensile strength\u003c\/li\u003e\n  \u003cli\u003eBlack oxide finish for mild corrosion resistance and reduced light reflection\u003c\/li\u003e\n  \u003cli\u003eFully threaded 1\/4-28 UNF right-hand thread with 3A fit class for precise engagement\u003c\/li\u003e\n  \u003cli\u003eMeets ANSI\/ASME B18.3 and ASTM F835 standards\u003c\/li\u003e\n  \u003cli\u003e5\/32-inch hex socket drive for use with standard Allen keys or hex bit drivers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or standard fastener for any application requiring a 1\/4-28 UNF fully threaded button socket cap screw conforming to ANSI\/ASME B18.3 and ASTM F835 specifications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation requires a 5\/32-inch hex key or socket bit driver. Ensure the mating tapped hole is clean and free of debris before threading to avoid cross-threading or galling. De-energize or lock out any equipment before fastener replacement on live machinery per applicable safety procedures. Do not exceed the torque capacity appropriate for the 1\/4-28 thread size and alloy steel grade.\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\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNRF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Fit Class\u003c\/strong\u003e: 3A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Type\u003c\/strong\u003e: Button\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Diameter\u003c\/strong\u003e: 0.437 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Height\u003c\/strong\u003e: 0.132 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: 5\/32 inches\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\u003eHardness\u003c\/strong\u003e: 38 HRC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: ANSI\/ASME B18.3, ASTM F835\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: 65018\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HOLO-KROME","offers":[{"title":"Default Title","offer_id":51742464180530,"sku":"65018","price":7985.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/838042c022b01c6ed4ee2a0f04165d60.jpg?v=1788837647","url":"https:\/\/voomisupply.com\/products\/holo-krome-65018-button-socket-cap-screw-1-4-28","provider":"Voomi Supply","version":"1.0","type":"link"}