Value Collection SIW8XX0300-200BX M3 Lock Washer 316 Ss

Product Description

The VALUE COLLECTION SIW8XX0300-200BX is a stainless steel internal tooth lock washer designed for M3 screw applications. It features a 3.2mm inside diameter and a 6mm outside diameter with a 0.4mm thickness. Constructed from Grade 316 Austenitic A4 stainless steel, this washer provides strong corrosion resistance in demanding environments. The serrated internal teeth bite into the mating surface and fastener head to resist loosening under vibration and torque. Supplied uncoated, it is ready for use in corrosive, marine, or chemical-exposure installations where standard carbon steel hardware is not suitable. This SKU ships in a minimum order quantity of 200 pieces.

Internal tooth lock washers in this size range are used across a wide variety of trade applications including electrical panel assembly, plumbing fixture mounting, HVAC equipment fastening, and light mechanical assemblies. The M3 sizing is common in small-frame equipment, control boards, junction box covers, and instrumentation mounting. Grade 316 stainless construction makes this washer appropriate for outdoor, coastal, or wet-area installations where extended service life is required. Electricians, HVAC technicians, and plumbers working on corrosion-sensitive assemblies will find this washer suited to production or service work requiring bulk quantities.

Key Features

• Grade 316 Austenitic A4 stainless steel for superior corrosion resistance
• Serrated internal teeth grip mating surface and fastener head to resist vibration-induced loosening
• 3.2mm inside diameter fits M3 fasteners
• 6mm outside diameter and 0.4mm thickness suit tight-clearance assemblies
• Uncoated finish — no coating degradation over time in wet or chemical environments
• Bulk pack of 200 pieces suitable for production runs or service stock

Compatibility

Designed for use with M3 screws and bolts in applications requiring an internal tooth lock washer. Suitable for stainless fastener assemblies where a 3.2mm ID washer is specified.

Installation Notes

Installation is performed by placing the washer on the fastener shank, teeth facing the bearing surface, before driving the fastener. Ensure mating surfaces are clean and free of debris so the serrated teeth can seat properly. No special tools are required beyond standard hand or power drivers appropriate to the fastener head type. When used in electrical applications, follow applicable NEC guidelines for hardware used in panel and equipment assemblies.