{"product_id":"gibraltar-42209g-heavy-hex-jam-nut-1-8-unc-alloy-steel","title":"Gibraltar 42209G Heavy Hex Jam Nut 1-8 Unc Alloy Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GIBRALTAR 42209G is a heavy hex jam nut threaded to a 1-8 UNC specification for use in high-load fastening applications. Manufactured from alloy steel with a black oxide finish, this jam nut provides corrosion resistance and a hardened surface suitable for demanding mechanical environments. It measures 1-5\/8 inches across flats and 35\/64 inches in height. The right-hand thread direction is standard for the majority of bolted assemblies. Plumbers, pipefitters, millwrights, and general maintenance technicians use heavy hex jam nuts to lock standard hex nuts in place or to secure threaded rod connections under vibration and load.\u003c\/p\u003e\n\u003cp\u003eThis jam nut is suited for use in heavy industrial, commercial, and mechanical service applications where a standard hex nut does not provide adequate bearing surface or locking resistance. The heavy hex profile delivers a wider flat-to-flat dimension compared to a standard hex nut, distributing clamping load across a larger contact area. Typical installation scenarios include threaded rod assemblies, structural connections, and equipment mounting applications requiring a secondary locking nut.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1-8 UNC thread form for broad compatibility with imperial threaded fastener systems\u003c\/li\u003e\n  \u003cli\u003eAlloy steel construction for elevated tensile strength compared to low-carbon alternatives\u003c\/li\u003e\n  \u003cli\u003eBlack oxide finish for moderate corrosion resistance and reduced light reflection\u003c\/li\u003e\n  \u003cli\u003eHeavy hex profile at 1-5\/8 inches across flats for increased wrench bearing surface\u003c\/li\u003e\n  \u003cli\u003eRight-hand thread direction matches standard bolting convention\u003c\/li\u003e\n  \u003cli\u003eLow-profile jam nut height at 35\/64 inches for space-constrained locking applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with 1-inch diameter, 8 threads-per-inch UNC threaded fasteners in heavy hex jam nut applications. Verify thread class and bearing surface requirements before installation.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed with a standard heavy hex wrench or open-end wrench sized to 1-5\/8 inches across flats. Power down or de-energize any associated equipment before servicing threaded connections in electrical or mechanical systems. Torque the primary nut to specification first, then back-torque the jam nut against it to lock the assembly. Do not use impact tools to set jam nuts in precision or structural applications without verifying the fastener grade and joint requirements.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1-8 UNC\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: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNut Type\u003c\/strong\u003e: Heavy Hex Jam Nut\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\u003eWidth Across Flats\u003c\/strong\u003e: 1-5\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 35\/64 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMilitary Specification\u003c\/strong\u003e: Does Not Meet Military Specifications\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: GIBRALTAR\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 42209G\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GIBRALTAR","offers":[{"title":"Default Title","offer_id":51695659548978,"sku":"42209G","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ff21cdb80722a8b5d977052707bdd510.jpg?v=1788337230","url":"https:\/\/voomisupply.com\/products\/gibraltar-42209g-heavy-hex-jam-nut-1-8-unc-alloy-steel","provider":"Voomi Supply","version":"1.0","type":"link"}