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The VALUE COLLECTION SIW8XX0600-100BX is a stainless steel internal tooth lock washer designed for M6 fastener assemblies. It features a 6.4mm inside diameter and an 11.0mm outside diameter with a thickness of 0.7mm. Manufactured from Grade 316 Austenitic A4 stainless steel, this washer delivers strong corrosion resistance in wet, marine, and chemically exposed environments. The serrated internal teeth bite into mating surfaces to resist loosening under vibration and torque. Supplied uncoated and sold in a minimum quantity of 100 pieces, it is suited for use by plumbers, electricians, HVAC technicians, and general mechanical tradespeople requiring reliable fastener retention in corrosive service conditions.
This internal tooth lock washer is appropriate for use in residential and commercial mechanical, plumbing, electrical, and HVAC applications where M6 threaded fasteners are used. The Grade 316 stainless steel construction makes it particularly well suited for outdoor, coastal, pool equipment, and other moisture-prone installations where standard carbon steel hardware would corrode prematurely. It is commonly used in panel assemblies, equipment mounting, and piping support hardware.
Designed as an OEM-style replacement or standard-service internal tooth lock washer for M6 threaded fastener assemblies across mechanical, electrical, and plumbing applications.
This washer is installed by placing it between the fastener head and the mating surface before tightening. Ensure the serrated teeth face the fastener head or the surface intended to grip. Use appropriate hand tools or power drivers set to the torque specification required by the parent assembly drawing. In stainless steel fastener assemblies, apply an anti-seize compound to the threaded fastener to prevent galling during tightening.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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