{"product_id":"gibraltar-74213208-round-knurled-check-nut-3-8-16-unc","title":"Gibraltar 74213208 Round Knurled Check Nut 3\/8-16 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GIBRALTAR 74213208 is a round knurled high torque check nut designed for secure fastening in applications where vibration resistance and a positive grip are critical. Machined from steel with a black oxide finish, this check nut features a 3\/8-16 UNC thread and a knurled head profile that allows for firm hand-tightening or tool-assisted installation without slipping. The black oxide coating provides modest corrosion resistance and a clean, low-reflectance appearance. Weighing 0.05 pounds, this nut is a compact, purpose-built fastener suited for mechanical assemblies, HVAC equipment panels, electrical enclosures, and industrial machinery where standard hex nuts are not practical.\u003c\/p\u003e\n\u003cp\u003eThis check nut is commonly used in trade and light industrial settings where a low-profile locking fastener with manual adjustability is needed. Its round knurled head makes it well-suited for panel mounting, shaft retention, and control component securing in HVAC units, electrical cabinets, and mechanical assemblies. The 3\/8-16 UNC thread is a widely standardized coarse-thread specification, making this nut compatible with a broad range of threaded rods, bolts, and studs found in residential and commercial mechanical systems. Licensed trades and maintenance technicians are the primary installers.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e3\/8-16 UNC coarse thread for broad fastener compatibility\u003c\/li\u003e\n  \u003cli\u003eRound knurled head enables high-torque hand tightening without tools\u003c\/li\u003e\n  \u003cli\u003eSteel construction for reliable mechanical strength\u003c\/li\u003e\n  \u003cli\u003eBlack oxide finish for corrosion resistance and reduced reflectance\u003c\/li\u003e\n  \u003cli\u003eCompact profile: 3\/8 inches overall height, 1 inch head diameter, 3\/4 inch base diameter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard replacement or new-installation check nut for 3\/8-16 UNC threaded fastener applications in HVAC, electrical, plumbing, and general mechanical assemblies.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified trades or maintenance technicians as part of mechanical assembly or equipment service. Power down or de-energize any equipment before installing fasteners on live panels or energized enclosures. Use appropriate hand tools and ensure the mating thread is clean and free of debris before threading on the nut. Follow applicable NEC or equipment manufacturer guidelines when installing fasteners within electrical enclosures.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3\/8-16\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Type\u003c\/strong\u003e: Round Knurled\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Black Oxide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Height\u003c\/strong\u003e: 3\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Diameter\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBase Diameter\u003c\/strong\u003e: 3\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.05 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: 74213208\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GIBRALTAR","offers":[{"title":"Default Title","offer_id":51699242074418,"sku":"74213208","price":16.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/54e23123367800b31390c0d7078e540a.jpg?v=1788374026","url":"https:\/\/voomisupply.com\/products\/gibraltar-74213208-round-knurled-check-nut-3-8-16-unc","provider":"Voomi Supply","version":"1.0","type":"link"}