{"product_id":"holo-krome-60080-flat-socket-cap-screw-5-16-18-x-1-in","title":"Holo-krome 60080 Flat Socket Cap Screw 5\/16-18 X 1 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HOLO-KROME 60080 is a flat socket cap screw designed for applications where a flush or countersunk fastener is required. It features an 82-degree flat head with a 3\/16-inch hex socket drive, allowing installation with a standard hex key in tight or recessed spaces. The screw is fully threaded along its 1-inch overall length with a 5\/16-18 UNC thread form and a Class 3A thread fit for close-tolerance assemblies. Manufactured from alloy steel and finished in black oxide, it delivers hardness in the 39 to 44 HRC range with moderate corrosion resistance. Maintenance technicians, millwrights, and fabricators working across industrial, mechanical, and structural assemblies are the typical installers of this fastener.\u003c\/p\u003e\n\u003cp\u003eThis flat socket cap screw is suited for machine assemblies, jigs, fixtures, and structural components where a low-profile or flush-mount fastener is needed. The 82-degree countersink angle is standard for inch-series applications and aligns with common countersink tooling. Its fully threaded configuration makes it well-suited for through-hole applications or shorter-engagement threaded joints where partial threading would reduce grip. Black oxide finish provides a non-reflective surface and light corrosion protection, making it a practical choice in interior or protected industrial environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e82-degree flat head countersink angle — compatible with standard inch-series countersink tooling\u003c\/li\u003e\n  \u003cli\u003e3\/16-inch hex socket drive for hex key installation in recessed or tight spaces\u003c\/li\u003e\n  \u003cli\u003eFully threaded along the entire 1-inch overall length\u003c\/li\u003e\n  \u003cli\u003eAlloy steel construction with 39 to 44 HRC hardness rating\u003c\/li\u003e\n  \u003cli\u003eBlack oxide finish for non-reflective appearance and light surface protection\u003c\/li\u003e\n  \u003cli\u003eMeets ASME B18.3 and ASTM F835 fastener standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for standard 5\/16-18 UNC Class 3A threaded holes requiring an 82-degree countersunk flat head fastener in inch-series mechanical and structural assemblies.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall using a 3\/16-inch hex key or hex bit driver; ensure the mating countersink is machined to 82 degrees for proper head seating and flush fit. De-energize, lock out, and tag out any equipment before fastener removal or installation on live machinery. Verify thread engagement depth meets design requirements for the application load before torquing. Follow applicable ASME or project-specific torque specifications for 5\/16-18 alloy steel fasteners.\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\u003c\/strong\u003e: 1 inch (overall)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Type\u003c\/strong\u003e: 82-degree Flat\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\u003eHead Diameter\u003c\/strong\u003e: 0.6560 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Height\u003c\/strong\u003e: 0.1980 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull or Partial Threading\u003c\/strong\u003e: Fully Threaded\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Fit Class\u003c\/strong\u003e: 3A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\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: 39-44 HRC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: 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: 60080\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HOLO-KROME","offers":[{"title":"Default Title","offer_id":51733227864370,"sku":"60080","price":6446.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/eea48530776f4134ed2b049addf02622.jpg?v=1788753047","url":"https:\/\/voomisupply.com\/products\/holo-krome-60080-flat-socket-cap-screw-5-16-18-x-1-in","provider":"Voomi Supply","version":"1.0","type":"link"}