Value Collection MPA98012 Wedge Lock Washer 316L Ss 5-pack

Product Description

The VALUE COLLECTION MPA98012 is a wedge lock washer engineered to maintain clamping force under vibration and dynamic load conditions. Made from 316L stainless steel in an uncoated finish, this washer provides strong corrosion resistance, making it a reliable choice for demanding service environments. The outside diameter measures 0.354 inches (minimum 0.346 inches), and the inside diameter ranges from 0.206 to 0.214 inches, sized for a No. 10 thread fastener. Licensed tradespeople working in corrosive or high-vibration applications rely on wedge lock washers to prevent fastener loosening without adhesives or chemical threadlockers. This pack includes 5 washers.

Wedge lock washers are commonly used in mechanical assemblies, HVAC equipment mounting, electrical panel hardware, and plumbing fixture installations where vibration or thermal cycling could cause standard fasteners to back out. The 316L stainless grade is particularly suited for coastal environments, chemical exposure settings, and applications requiring elevated corrosion resistance compared to standard 304 stainless. The No. 10 thread sizing fits a wide range of machine screws and bolts used in light structural and equipment-mounting applications across the trades.

Key Features

• 316L stainless steel construction for superior corrosion resistance in harsh environments
• Wedge lock design prevents fastener loosening under vibration and dynamic loads
• Outside diameter: 0.354 inches (minimum 0.346 inches)
• Inside diameter: 0.206 to 0.214 inches, sized for No. 10 thread fasteners
• Uncoated finish — no coating to chip, flake, or compromise fit in tight tolerances
• Meets ISO 14001 and ISO 9001 standards

Compatibility

Designed for use with No. 10 inch-series threaded fasteners (machine screws and bolts) in assemblies requiring anti-loosening washer retention.

Installation Notes

Installation requires no special tooling beyond standard wrenches or screwdrivers appropriate for the fastener head type. Always de-energize electrical panels and shut off relevant systems before servicing any hardware connections. Wedge lock washers are installed in pairs with the cam faces mated together — do not separate the pair during installation. Confirm fastener thread size matches the washer ID range before assembly to ensure proper clamping action.