{"product_id":"holo-krome-65016-button-socket-cap-screw-1-4-28-3-8in","title":"Holo-krome 65016 Button Socket Cap Screw 1\/4-28 3\/8in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HOLO-KROME 65016 is a button socket cap screw designed for applications requiring a low-profile, high-strength fastener with a hex socket drive. Manufactured from alloy steel with a black oxide finish, this screw meets ANSI\/ASME B18.3 and ASTM F835 standards. It features a 1\/4-28 UNF thread form with a Class 3A fit, providing close dimensional tolerances for precision assemblies. The 5\/32-inch hex socket drive accepts standard hex keys. Hardness is rated at 38 HRC, making it suited for moderate to high load-bearing joints in tight-clearance installations. Fully threaded along its 3\/8-inch length under head, it is commonly installed by machinists, millwrights, and maintenance technicians.\u003c\/p\u003e\u003cp\u003eThe HOLO-KROME 65016 is used in mechanical assemblies, machine guarding, fixtures, and equipment frames where a flush or near-flush fastener head is required. The button head profile reduces snag points and distributes clamping load over a wider bearing surface than a standard socket head. The black oxide finish provides mild corrosion resistance suitable for interior or controlled-environment use. This screw ships in multiples of 100 units per order.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eButton head profile with 0.437-inch head diameter for low-profile, wide-bearing installations\u003c\/li\u003e\n\u003cli\u003e1\/4-28 UNF fully threaded, Class 3A fit for precise thread engagement\u003c\/li\u003e\n\u003cli\u003eAlloy steel construction rated at 38 HRC hardness\u003c\/li\u003e\n\u003cli\u003eBlack oxide finish for mild corrosion resistance in controlled environments\u003c\/li\u003e\n\u003cli\u003e5\/32-inch hex socket drive compatible with standard hex keys\u003c\/li\u003e\n\u003cli\u003eMeets ANSI\/ASME B18.3 and ASTM F835 fastener standards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard 1\/4-28 UNF button socket cap screw conforming to ANSI\/ASME B18.3, suitable for use in any application requiring this thread size, head style, and drive type.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstall and remove using a 5\/32-inch hex key or hex bit driver. Power down and de-energize any equipment before accessing fastener locations in live machinery. Black oxide finish does not provide heavy corrosion protection  -  avoid prolonged exposure to moisture or corrosive environments without additional coating. Follow applicable industry or equipment manufacturer torque guidelines for 1\/4-28 fasteners in the specific joint material.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\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: UNF\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: 3\/8 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\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 65016\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HOLO-KROME","offers":[{"title":"Default Title","offer_id":51739734638898,"sku":"65016","price":6082.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/43d0c2f1aae73931fa40a8893cfed8f1.jpg?v=1788818343","url":"https:\/\/voomisupply.com\/products\/holo-krome-65016-button-socket-cap-screw-1-4-28-3-8in","provider":"Voomi Supply","version":"1.0","type":"link"}