{"product_id":"value-collection-siw7x1800-050bx-m18-internal-tooth-lock-washer","title":"Value Collection SIW7X1800-050BX M18 Internal Tooth Lock Washer","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION SIW7X1800-050BX is a stainless steel internal tooth lock washer designed for M18 screw applications. The internal tooth configuration grips the bearing surface of the fastener head, resisting loosening caused by vibration and torque. Manufactured from Grade 18-8 Austenitic A2 stainless steel, this washer delivers solid corrosion resistance in wet, chemical-exposure, and outdoor environments. The uncoated finish maintains dimensional consistency and is suitable for use where galvanic compatibility with stainless fasteners is required. Electricians, plumbers, HVAC technicians, and mechanical contractors install this type of hardware in equipment assemblies, panel mounts, and structural connections requiring reliable fastener retention.\u003c\/p\u003e\n\u003cp\u003eThis washer is sized for M18 fasteners with a 19mm inside diameter and a 30mm outside diameter, placing it in a mid-to-large hardware category suited to industrial and commercial mechanical assemblies. It is appropriate for use in corrosion-prone environments such as rooftop HVAC equipment, pool mechanical rooms, marine-adjacent installations, and stainless fastener assemblies where a coated or zinc-plated washer would introduce dissimilar-metal concerns. The 1.4mm thickness provides adequate spring bite without excessive stack height in close-tolerance assemblies.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eInternal tooth design bites into fastener head bearing surface to resist vibration-induced loosening\u003c\/li\u003e\n  \u003cli\u003eGrade 18-8 Austenitic A2 stainless steel construction for corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eUncoated finish eliminates coating thickness variability and is galvanically compatible with stainless fasteners\u003c\/li\u003e\n  \u003cli\u003e19mm inside diameter sized for M18 screw applications\u003c\/li\u003e\n  \u003cli\u003e30mm outside diameter provides broad load distribution on the mating surface\u003c\/li\u003e\n  \u003cli\u003eDoes not meet military specifications — suited for commercial and industrial 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 M18 fastener applications. Confirm inside diameter, outside diameter, and thickness against assembly tolerances before installation.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall with the teeth facing the underside of the fastener head, not the mating surface, to allow proper bite during tightening. Power down or de-energize any equipment before performing fastener work in electrical or HVAC panel assemblies. Use appropriate torque procedures per the equipment manufacturer or applicable code; do not overtighten, as excess torque on stainless fasteners can cause galling. Inspect the washer seating surface for burrs or debris prior to assembly.\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 A2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 19.0mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 30.0mm\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\u003eMilitary Specification\u003c\/strong\u003e: Does Not Meet Military Specifications\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: SIW7X1800-050BX\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51694366589234,"sku":"SIW7X1800-050BX","price":1821.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2391949c132393c81657572f2424623b.jpg?v=1788323683","url":"https:\/\/voomisupply.com\/products\/value-collection-siw7x1800-050bx-m18-internal-tooth-lock-washer","provider":"Voomi Supply","version":"1.0","type":"link"}