{"product_id":"value-collection-siwis0370usa-100bx-lock-washer-100","title":"Value Collection SIWIS0370USA-100BX Lock Washer 100","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION SIWIS0370USA-100BX is a zinc-plated, Grade 2 steel internal tooth lock washer designed for 3\/8 inch screws. It features a 0.398 inch inside diameter and a 0.692 inch outside diameter, with a thickness of 0.04 inches. The internal tooth pattern bites into the mating surface and fastener head to resist loosening caused by vibration and torque. This washer is a standard hardware component installed by electricians, plumbers, HVAC technicians, and general contractors in a wide range of mechanical and structural assemblies. Sold in a minimum order quantity of 100 units per box.\u003c\/p\u003e\n\u003cp\u003eInternal tooth lock washers in this size range are used in residential and light commercial applications wherever a standard 3\/8 inch fastener requires vibration resistance. Common install scenarios include electrical panel work, equipment mounting, conduit supports, HVAC equipment brackets, and general sheet-metal assemblies. The zinc plating provides moderate corrosion resistance suitable for indoor and protected outdoor environments. Grade 2 steel construction meets typical mechanical fastening requirements across most trade applications.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eInternal tooth design grips mating surfaces to resist loosening under vibration\u003c\/li\u003e\n  \u003cli\u003e0.398 inch inside diameter fits standard 3\/8 inch fasteners\u003c\/li\u003e\n  \u003cli\u003e0.692 inch outside diameter with 0.04 inch thickness\u003c\/li\u003e\n  \u003cli\u003eZinc-plated finish provides moderate corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eGrade 2 steel construction for general mechanical fastening duty\u003c\/li\u003e\n  \u003cli\u003eSold in a box of 100 for job-site and shop use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard internal tooth lock washer for use with 3\/8 inch screws and bolts across general mechanical, electrical, and HVAC fastening applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall with the teeth facing the fastener head or the mating surface to ensure proper grip and vibration resistance. Place the washer before tightening the fastener to final torque — do not reuse a washer that has been fully compressed. Follow applicable NEC, IPC, or IFGC guidelines when using fasteners in code-governed assemblies. No special tools are required for installation beyond standard hand or power drivers.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTooth Type\u003c\/strong\u003e: Internal 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\u003eInside Diameter\u003c\/strong\u003e: 0.398 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 0.692 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.04 inches\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: 3\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 100 washers\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound (per box)\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: SIWIS0370USA-100BX\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51714801467698,"sku":"SIWIS0370USA-100BX","price":3998.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/9e32835c3f5f6c93847af78559677c4d.jpg?v=1788506400","url":"https:\/\/voomisupply.com\/products\/value-collection-siwis0370usa-100bx-lock-washer-100","provider":"Voomi Supply","version":"1.0","type":"link"}