{"product_id":"holo-krome-60138-flat-socket-cap-screw-1-2-13-x-2-1-2-in","title":"Holo-krome 60138 Flat Socket Cap Screw 1\/2-13 X 2-1\/2 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HOLO-KROME 60138 is a flat socket cap screw designed for applications requiring a low-profile, flush-mount fastener with high tensile strength. Manufactured from alloy steel with a black oxide finish, this screw measures 1\/2-13 thread size by 2-1\/2 inches in overall length and is partially threaded. The 82-degree flat head seats flush into a countersunk hole, reducing protrusion in finished assemblies. Drive engagement is via a 5\/16-inch hex socket. With a hardness rating of 39-44 HRC and a Thread Fit Class of 3A, this fastener is built for precision and load-bearing service in mechanical and structural applications.\u003c\/p\u003e\n\u003cp\u003eThis flat socket cap screw is suited for use in machine assemblies, fixture building, tooling plates, and structural connections where a flush head profile is required. The UNC thread form and ASME B18.3 and ASTM F835 compliance make it appropriate for demanding industrial and manufacturing environments. It is installed by machinists, millwrights, and maintenance technicians working with ferrous and non-ferrous assemblies. The black oxide finish provides moderate corrosion resistance and reduces light reflection in precision applications.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e82-degree flat head seats flush into countersunk holes for a low-profile installation\u003c\/li\u003e\n  \u003cli\u003e5\/16-inch hex socket drive for standard Allen key or hex bit installation\u003c\/li\u003e\n  \u003cli\u003eAlloy steel construction with 39-44 HRC hardness for high-strength load-bearing use\u003c\/li\u003e\n  \u003cli\u003eBlack oxide finish for mild corrosion resistance and reduced surface reflectivity\u003c\/li\u003e\n  \u003cli\u003ePartially threaded shank for improved shear resistance and accurate hole alignment\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 as an OEM-style replacement or direct-use flat socket cap screw conforming to ASME B18.3 and ASTM F835 standards, compatible with standard 1\/2-13 UNC tapped holes and countersunk assemblies requiring an 82-degree flat head profile.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed with a properly sized 5\/16-inch hex key or socket bit to avoid rounding the drive recess. Ensure the mating countersink is machined to an 82-degree included angle for full head seating. Follow applicable torque specifications from ASME or fastener manufacturer references for the 1\/2-13 thread class. De-energize and lock out any machinery before fastener replacement or adjustment.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/2-13\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 2-1\/2 inches (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: 5\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Diameter\u003c\/strong\u003e: 0.938 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Height\u003c\/strong\u003e: 0.251 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreading\u003c\/strong\u003e: Partially 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: 60138\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HOLO-KROME","offers":[{"title":"Default Title","offer_id":51742687068466,"sku":"60138","price":9655.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/50155a8dae88643566080a331702fb2f.jpg?v=1788838839","url":"https:\/\/voomisupply.com\/products\/holo-krome-60138-flat-socket-cap-screw-1-2-13-x-2-1-2-in","provider":"Voomi Supply","version":"1.0","type":"link"}