{"product_id":"value-collection-31343-no-12-external-tooth-lock-washer-100pk","title":"Value Collection 31343 No.12 External Tooth Lock Washer 100pk","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 31343 is a No. 12 screw external tooth lock washer manufactured from Grade 2 steel with a zinc-plated finish. External tooth lock washers grip mating surfaces when a fastener is torqued down, resisting loosening caused by vibration and dynamic loads. The serrated outer teeth bite into both the bearing surface and the fastener head, creating a mechanical lock. This washer measures 0.022 inches thick with an inside diameter range of 0.221 to 0.231 inches and an outside diameter range of 0.462 to 0.474 inches. Electricians, HVAC technicians, plumbers, and general trade professionals use these washers in panel assemblies, equipment mounting, and utility enclosure work. Sold in a pack of 100.\u003c\/p\u003e\n\u003cp\u003eExternal tooth lock washers in No. 12 sizing are used across light-gauge sheet metal assemblies, electrical enclosures, HVAC equipment panels, and general mechanical fastening applications where vibration resistance is required. The zinc plating provides baseline corrosion protection suitable for indoor and sheltered outdoor installations. These are not rated to military specifications. Typical applications include securing screws in control panel assemblies, junction boxes, motor mounts, and equipment brackets where maintaining clamp load over time is critical.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eExternal tooth design bites into bearing surface and fastener head to resist vibrational loosening\u003c\/li\u003e\n  \u003cli\u003eGrade 2 steel construction for standard mechanical fastening applications\u003c\/li\u003e\n  \u003cli\u003eZinc-plated finish provides corrosion resistance for indoor and sheltered use\u003c\/li\u003e\n  \u003cli\u003eInside diameter range of 0.221 to 0.231 inches fits No. 12 screw sizing\u003c\/li\u003e\n  \u003cli\u003eThickness of 0.022 inches for consistent clamp load distribution\u003c\/li\u003e\n  \u003cli\u003ePack of 100 units for bench stock and field service kits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with No. 12 machine screws and bolts in standard fastening applications. Suitable for light-gauge steel assemblies, electrical enclosures, and general equipment mounting where an external tooth lock washer is specified. Does not meet military specifications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall with the teeth facing the fastener head or the surface requiring the locking action, never between two hardened surfaces where the teeth cannot embed. Ensure mating surfaces are clean and free of paint or coatings that would prevent tooth engagement. Torque fasteners per the assembly specification for the screw size and joint material. Single-use only — lock washers should not be reused once the teeth have been compressed.\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: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: Grade 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc-Plated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eScrew Size\u003c\/strong\u003e: No. 12\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.022 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Inside Diameter\u003c\/strong\u003e: 0.221 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Inside Diameter\u003c\/strong\u003e: 0.231 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Outside Diameter\u003c\/strong\u003e: 0.462 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Outside Diameter\u003c\/strong\u003e: 0.474 inches\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\u003ePackage Quantity\u003c\/strong\u003e: 100\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\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: 31343\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51695928312114,"sku":"31343","price":17.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/65076941a41015a72e7ee380252708ea.jpg?v=1788339505","url":"https:\/\/voomisupply.com\/products\/value-collection-31343-no-12-external-tooth-lock-washer-100pk","provider":"Voomi Supply","version":"1.0","type":"link"}