Value Collection SEW8XX0500-100BX M5 Lock Washer SS316

Product Description

The VALUE COLLECTION SEW8XX0500-100BX is an external tooth lock washer designed for M5 fastener applications. It features a serrated external tooth profile that bites into the mating surface and fastener bearing face to resist loosening under vibration and dynamic loading. Manufactured from Grade 316 austenitic stainless steel (A4), this washer delivers strong corrosion resistance in wet, marine, and chemically aggressive environments. The uncoated finish maintains dimensional consistency without added coating thickness. This washer has a 5.3mm inside diameter, 10mm outside diameter, and 0.6mm thickness. It is supplied in a minimum order quantity of 100 pieces per package.

External tooth lock washers are commonly used in general mechanical assembly, marine hardware, food processing equipment, and outdoor structural connections where both vibration resistance and corrosion resistance are required. The M5 sizing suits a wide range of light- to medium-duty fastening applications across commercial, industrial, and marine environments. Machinists, millwrights, maintenance technicians, and assemblers routinely install these washers wherever standard spring washers would be vulnerable to corrosion or chemical exposure.

Key Features

• Grade 316 austenitic stainless steel (A4) for superior corrosion resistance in marine and chemical environments
• External serrated tooth profile grips both the fastener bearing face and the mating surface to resist loosening
• 5.3mm inside diameter sized for M5 screws and bolts
• 0.6mm thickness for a low-profile installation footprint
• Uncoated finish eliminates coating-related dimensional variation
• Supplied in packs of 100 to support production and maintenance quantity requirements

Compatibility

Designed as an OEM-style replacement or standard hardware component for use with M5 screws and bolts in assemblies requiring external tooth lock washer retention.

Installation Notes

Installation is performed by machinists, assemblers, or maintenance technicians using standard hand tools or power fastening equipment. Place the washer on the fastener shank with the teeth facing the mating surface before driving the fastener. Ensure the mating surface is clean and free of debris to allow proper tooth engagement. When working in electrical enclosures or powered equipment, de-energize the assembly before performing fastener work in accordance with applicable lockout and tagout procedures.