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The VALUE COLLECTION MP31516 is a wedge lock washer engineered to maintain secure fastener tension in bolted assemblies subject to vibration and dynamic loading. Manufactured from Grade 2 steel with a zinc-plated zinc flake finish, this washer measures 0.778 inches outer diameter and accepts a 1/2 inch thread size with an inside diameter range of 0.522 to 0.538 inches. The wedge lock design creates a mechanical locking action between mating surfaces, resisting loosening without adhesives or thread-locking compounds. This washer is installed by licensed tradespeople and maintenance professionals in mechanical, HVAC, electrical, and structural fastening applications.
The MP31516 wedge lock washer is suited for both residential and commercial applications where reliable fastener retention is critical. Typical install scenarios include equipment mounting, panel and bracket assemblies, and vibration-prone mechanical connections. The zinc flake coating provides corrosion resistance for moderate-exposure environments. Sold in packages of 10, with a minimum order quantity of 1 package, this washer is a practical stocking item for field service kits and shop inventory.
Designed as an OEM-style replacement or standard fitment wedge lock washer for 1/2 inch threaded fastener assemblies in general mechanical, HVAC, electrical, and industrial applications.
Installation of wedge lock washers should be performed by qualified tradespeople familiar with fastener torque procedures appropriate to the application and bolt grade in use. Always de-energize equipment and relieve system pressure before servicing fastened assemblies. Install washers in mating pairs with the cam faces engaged for proper locking action. Consult applicable codes and equipment manufacturer guidelines for fastener torque requirements specific to the assembly.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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