{"product_id":"holo-krome-64058-button-socket-cap-screw-5-16-18","title":"Holo-krome 64058 Button Socket Cap Screw 5\/16-18","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HOLO-KROME 64058 is a button head socket cap screw designed for mechanical assemblies requiring a low-profile fastening solution with high tensile strength. It features a 5\/16-18 UNC thread and a 3\/4-inch length under head, fully threaded with a Class 3A thread fit for close-tolerance applications. The alloy steel construction is finished in black oxide for corrosion resistance in indoor and mildly corrosive environments. A 3\/16-inch hex socket drive provides secure torque transfer. This fastener meets ANSI\/ASME B18.3 and ASTM F835 standards and is commonly installed by machinists, millwrights, and field service technicians working on equipment, panels, and structural components.\u003c\/p\u003e\n\u003cp\u003eThis screw is suited for use in light machinery, enclosures, brackets, and equipment frames where a flush or near-flush fastener profile is preferred over a standard hex cap screw. The button head geometry distributes clamping load over a wider bearing surface, making it a practical choice for softer base materials or thin-stock assemblies. It is appropriate for both OEM manufacturing and field maintenance applications across industrial, HVAC, electrical, and general mechanical trades.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eButton head profile provides low-clearance fastening with wide bearing surface\u003c\/li\u003e\n  \u003cli\u003eAlloy steel construction with 38 HRC hardness for high-strength applications\u003c\/li\u003e\n  \u003cli\u003eBlack oxide finish for mild corrosion resistance and reduced light reflection\u003c\/li\u003e\n  \u003cli\u003e5\/16-18 UNC Class 3A thread fit for precise, close-tolerance engagement\u003c\/li\u003e\n  \u003cli\u003eFully threaded shank along 3\/4-inch length under head\u003c\/li\u003e\n  \u003cli\u003eMeets ANSI\/ASME B18.3 and ASTM F835 fastener standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard ANSI\/ASME B18.3 button socket cap screw suitable for general mechanical assemblies, equipment frames, enclosures, and machinery requiring a 5\/16-18 UNC fully threaded fastener with a hex socket drive.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation requires a 3\/16-inch hex key or socket bit driver. Verify that mating threads are clean and free of debris before driving. Apply thread lubricant or thread-locking compound as required by the application and applicable mechanical codes. De-energize or lock out any equipment before fastener service to comply with applicable OSHA lockout\/tagout procedures.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/16-18 UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 0.75 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: 0.5470 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Height\u003c\/strong\u003e: 0.1660 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\/16 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\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\u003eThread Standard\u003c\/strong\u003e: UNRC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: ANSI\/ASME B18.3 and 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: 64058\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HOLO-KROME","offers":[{"title":"Default Title","offer_id":51749405294898,"sku":"64058","price":7919.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/411f40aa8d5ee157d6a75501cd0a9706.jpg?v=1788905674","url":"https:\/\/voomisupply.com\/products\/holo-krome-64058-button-socket-cap-screw-5-16-18","provider":"Voomi Supply","version":"1.0","type":"link"}