Value Collection SIW7X0800-100BX M8 Lock Washer Ss 18-8

Product Description

The VALUE COLLECTION SIW7X0800-100BX is a stainless steel internal tooth lock washer designed for M8 screw applications. It features an 8.4mm inside diameter and a 15.0mm outside diameter with a 0.8mm thickness. The internal tooth design bites into both the fastener bearing surface and the mating material to resist loosening under vibration and dynamic loads. Manufactured from Grade 18-8 austenitic stainless steel to ASTM A2 classification, this washer delivers corrosion resistance suitable for wet, outdoor, and chemically exposed environments. This package contains 100 washers. Licensed tradespeople and maintenance professionals working with stainless fastener assemblies will find this washer ready for direct installation.

This internal tooth lock washer is suited for mechanical, electrical, plumbing, and HVAC panel assemblies where stainless hardware is specified. The M8 sizing fits standard metric fastener assemblies commonly found in equipment frames, enclosures, brackets, and structural connections. The uncoated finish is compatible with natural stainless installations where added coatings could interfere with torque values or contact surfaces. This washer is appropriate for both residential and light commercial applications wherever vibration resistance and corrosion resistance are required in a single hardware component.

Key Features

• Internal tooth design provides multi-point grip to resist fastener back-off under vibration
• Grade 18-8 austenitic stainless steel construction meets A2 classification for corrosion resistance
• Uncoated finish maintains consistent contact and torque characteristics
• 8.4mm ID fits M8 metric fasteners directly without modification
• 0.8mm thickness provides positive locking action without excessive stack height
• Sold in a 100-piece pack for job-lot and service-stock use

Compatibility

Designed as an OEM-style replacement or service-stock lock washer for M8 metric fastener assemblies requiring internal tooth locking and stainless steel corrosion resistance.

Installation Notes

Installation is performed by any trade professional working with metric fastener assemblies. Power down or de-energize equipment before accessing fastened panels or enclosures. Place the washer on the fastener with the teeth facing the bearing surface of the nut or bolt head, not the mating substrate. Do not reuse lock washers that have been previously compressed, as the tooth engagement is reduced after initial installation.