{"product_id":"value-collection-r52001237-external-tooth-lock-washer","title":"Value Collection R52001237 External Tooth Lock Washer","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION R52001237 is an external tooth lock washer designed for use with 1\/2 inch screws and fastener assemblies requiring vibration resistance and secure clamping. Manufactured from Grade 2 spring steel with a zinc-plated finish, this washer features serrated external teeth that bite into both the fastener bearing surface and the mating material to resist loosening under dynamic loads. The inside diameter measures 0.53 inches and the outside diameter measures 0.9 inches, with a thickness of 0.045 inches. Hardness is rated at 40 to 50 HRC, providing reliable spring tension across a wide range of industrial and mechanical applications. Installation is performed by maintenance technicians, electricians, plumbers, and general mechanical trades.\u003c\/p\u003e\n\u003cp\u003eThis external tooth lock washer is suited for residential, commercial, and light industrial fastening applications where vibration or torque-induced loosening is a concern. It is commonly used in electrical enclosures, mechanical assemblies, HVAC equipment panels, and structural fastening where a 1\/2 inch fastener is specified. The zinc-plated finish provides basic corrosion resistance appropriate for indoor and protected outdoor environments. This part does not meet military specifications.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eExternal tooth design bites into mating surfaces to resist vibration-induced loosening\u003c\/li\u003e\n  \u003cli\u003eGrade 2 spring steel construction rated at 40 to 50 HRC hardness\u003c\/li\u003e\n  \u003cli\u003eZinc-plated finish for corrosion protection in standard service environments\u003c\/li\u003e\n  \u003cli\u003eInside diameter of 0.53 inches fits standard 1\/2 inch screws and bolts\u003c\/li\u003e\n  \u003cli\u003eThickness of 0.045 inches provides consistent spring tension without excessive stack height\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard external tooth lock washer for use with 1\/2 inch screws and bolts in general mechanical, electrical, and HVAC panel fastening applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall with the teeth facing the fastener head or nut bearing surface, not toward the mating workpiece, unless application requirements specify otherwise. Ensure the mating surface is clean and free of coatings that would prevent tooth engagement. Do not reuse lock washers that have been fully compressed or deformed. Follow applicable torque specifications from the fastener manufacturer or governing codes for the assembly type.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTooth Type\u003c\/strong\u003e: External Tooth\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Spring Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: Grade 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 0.53 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Inside Diameter\u003c\/strong\u003e: 0.513 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Inside Diameter\u003c\/strong\u003e: 0.53 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 0.9 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Outside Diameter\u003c\/strong\u003e: 0.88 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Outside Diameter\u003c\/strong\u003e: 0.9 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.045 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Thickness\u003c\/strong\u003e: 0.045 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc-Plated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardness\u003c\/strong\u003e: 40 to 50 HRC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eScrew Size\u003c\/strong\u003e: 1\/2 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMilitary Specification\u003c\/strong\u003e: Does Not Meet Military Specifications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31161801\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: VALUE COLLECTION\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: R52001237\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51709416341810,"sku":"R52001237","price":8036.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a6ecd73b5a0ed81fc2289801c356603c.jpg?v=1788456116","url":"https:\/\/voomisupply.com\/products\/value-collection-r52001237-external-tooth-lock-washer","provider":"Voomi Supply","version":"1.0","type":"link"}