{"product_id":"holo-krome-72392-hex-socket-cap-screw-1-8-unc-alloy-steel","title":"Holo-krome 72392 Hex Socket Cap Screw 1-8 Unc Alloy Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HOLO-KROME 72392 is a partially threaded hex socket cap screw designed for high-strength bolted connections in industrial, mechanical, and trade applications. It features a 1-8 UNC thread size, a 6.5-inch length under head, and a 3\/4-inch hex drive socket. The fastener is manufactured from alloy steel and finished with a black oxide coating that provides moderate corrosion resistance and reduces surface reflectivity. It conforms to ASME B18.3 and ASTM A574 standards, which define the dimensional and mechanical property requirements for socket cap screws in demanding service environments. Licensed mechanics, millwrights, and maintenance technicians typically install this fastener in machinery, structural assemblies, and equipment frames.\u003c\/p\u003e\u003cp\u003eThis screw is suited for applications requiring high clamping force in a compact-head fastener format. The partial threading allows full thread engagement in tapped holes while providing a smooth shank section that resists shear loading. Common install scenarios include machine bases, heavy equipment housings, hydraulic manifold mounting, and structural steel fabrication where a recessed drive profile is required to clear surrounding geometry.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1-8 UNC thread form for high clamping load capacity in coarse-thread tapped holes\u003c\/li\u003e\n\u003cli\u003e6.5-inch length under head accommodates thick stack-ups and deep clearance requirements\u003c\/li\u003e\n\u003cli\u003e3\/4-inch hex socket drive for use with standard hex keys and socket drivers\u003c\/li\u003e\n\u003cli\u003ePartial threading preserves a full shank section for shear resistance\u003c\/li\u003e\n\u003cli\u003eAlloy steel construction meets ASTM A574 mechanical property requirements\u003c\/li\u003e\n\u003cli\u003eBlack oxide finish reduces bare metal exposure and light reflection in service\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-fit fastener for applications specifying a 1-8 UNC partially threaded hex socket cap screw conforming to ASME B18.3 and ASTM A574.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by qualified mechanics or maintenance technicians using a calibrated torque wrench and the appropriate 3\/4-inch hex key or socket bit. Always verify that the mating tapped hole thread class and material are compatible with the fastener grade before assembly. De-energize and lockout all equipment before replacing structural fasteners in machinery or powered assemblies. Follow applicable industry torque guidelines for the fastener grade and lubrication condition specified in the equipment service documentation.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1-8 UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 6.5 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\/4 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreading\u003c\/strong\u003e: Partially Threaded\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\u003eFastener Standard\u003c\/strong\u003e: ASME B18.3, ASTM A574\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31161501\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: 72392\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HOLO-KROME","offers":[{"title":"Default Title","offer_id":51739446083890,"sku":"72392","price":58.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/51b0183c41f82feedb205a01635e95d6.jpg?v=1788814689","url":"https:\/\/voomisupply.com\/products\/holo-krome-72392-hex-socket-cap-screw-1-8-unc-alloy-steel","provider":"Voomi Supply","version":"1.0","type":"link"}