Value Collection SIW8XX1000-100BX M10 Lock Washer 316 Ss

Product Description

The VALUE COLLECTION SIW8XX1000-100BX is a stainless steel internal tooth lock washer designed for use with M10 fasteners. It features a serrated internal tooth profile that bites into the mating surface and fastener head to resist loosening under vibration and torque. Manufactured from Grade 316 austenitic stainless steel to the A4 specification, this washer delivers strong resistance to corrosion in wet, chemical, and marine environments. With a 10.5mm inside diameter, 18mm outside diameter, and 0.9mm thickness, it fits standard M10 screw and bolt applications without modification. The uncoated finish maintains dimensional precision and avoids coating-related thickness variation.

This internal tooth lock washer is suited for mechanical, electrical, plumbing, and HVAC assembly work where fastener retention is required in corrosive or high-humidity environments. The Grade 316 stainless construction makes it a common choice for outdoor installations, marine-adjacent equipment, pool and spa mechanical assemblies, and stainless fastener system builds. It is sold in minimum order quantities of 100 pieces per package, making it appropriate for contractors and technicians who maintain fastener stock for service work or panel and equipment assembly.

Key Features

• Internal serrated tooth design grips fastener bearing surface to prevent loosening under vibration
• Grade 316 austenitic A4 stainless steel for superior corrosion resistance in wet and chemical environments
• 10.5mm inside diameter fits M10 screw and bolt fasteners
• 18mm outside diameter and 0.9mm thickness for consistent, low-profile seating
• Uncoated finish preserves dimensional accuracy and avoids added thickness variation
• Sold in 100-piece minimum quantities for trade and contractor stocking

Compatibility

Designed for use with M10 screws and bolts in standard metric fastener assemblies. Suitable for stainless fastener systems in corrosive service environments including pool, marine, and outdoor mechanical applications.

Installation Notes

Install between the fastener head or nut and the mating surface with the teeth facing the fastener bearing surface. Power down or de-energize any electrical panel or equipment before installing fasteners in live assemblies. Use appropriate hand tools or calibrated torque equipment per the equipment manufacturer specifications. Do not reuse lock washers after removal, as the teeth deform on initial tightening and will not provide reliable retention if reinstalled.