{"product_id":"value-collection-siw8x2000-050bx-m20-lock-washer","title":"Value Collection SIW8X2000-050BX M20 Lock Washer","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION SIW8X2000-050BX is a stainless steel internal tooth lock washer designed for use with M20 fasteners. It features a serrated internal tooth configuration that bites into mating surfaces to resist loosening under vibration and dynamic loading. Manufactured from Grade 18-8 austenitic stainless steel (Austenitic Grade A2), this washer carries an uncoated finish suitable for corrosion-resistant installations. The 21mm inner diameter fits M20 screws and bolts, while the 33mm outer diameter provides adequate bearing surface. Installers working in wet, outdoor, or chemically active environments favor the A2 stainless grade for its resistance to rust and oxidation. This washer conforms to DIN 6797 and DIN 6798 standards.\u003c\/p\u003e\n\u003cp\u003eInternal tooth lock washers in this size range are used across mechanical, structural, and electrical assembly applications wherever an M20 fastener requires positive locking without a separate locking element. Common install scenarios include panel mounting, equipment framing, pump and motor assemblies, and general fabrication work. The internal tooth design keeps the outer perimeter clear, making it well suited for applications with close hole-to-edge tolerances or finished surface aesthetics. Electricians, millwrights, pipefitters, and general maintenance technicians regularly specify this type of washer.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eInternal serrated teeth grip the fastener shank and mating surface to resist rotation and loosening\u003c\/li\u003e\n  \u003cli\u003eGrade 18-8 austenitic stainless steel (A2) provides corrosion resistance without a protective coating\u003c\/li\u003e\n  \u003cli\u003e21mm inner diameter sized for M20 screws and bolts\u003c\/li\u003e\n  \u003cli\u003e33mm outer diameter with 1.4mm thickness per DIN 6797 and DIN 6798 specifications\u003c\/li\u003e\n  \u003cli\u003eUncoated finish — no risk of coating failure or galvanic incompatibility in stainless assemblies\u003c\/li\u003e\n  \u003cli\u003eSerrated tooth geometry distributes clamping load and maintains preload under vibration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard-profile internal tooth lock washer for use with M20 screws, bolts, and fasteners in assemblies requiring DIN 6797 or DIN 6798 compliant locking hardware.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall with the teeth facing the fastener head or nut, not the workpiece surface, unless the assembly design specifies otherwise. Ensure mating surfaces are free of debris and excess lubricant, as heavy lubrication can reduce the locking effectiveness of the serrated teeth. Torque the fastener to the value specified in the assembly drawing or engineering standard for the fastener grade and size. Wear appropriate hand protection when handling washers in bulk, as tooth edges are sharp.\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: Stainless Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: 18-8 Austenitic Grade A2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 21mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 33mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 1.4mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: DIN 6797, DIN 6798\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1 pounds\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: SIW8X2000-050BX\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51694109983026,"sku":"SIW8X2000-050BX","price":3195.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/9a80a204642cbf9c9a6aab24242b1ddc_a6edff68-0f2e-4e3d-98b3-efa483e30e0e.jpg?v=1788320367","url":"https:\/\/voomisupply.com\/products\/value-collection-siw8x2000-050bx-m20-lock-washer","provider":"Voomi Supply","version":"1.0","type":"link"}