Value Collection 81923880 Split Lock Washer 5/8 in Grade 2

Product Description

The VALUE COLLECTION 81923880 is a Grade 2 steel split lock washer sized for 5/8 inch screws and finished with a zinc plating for corrosion resistance. Split lock washers work by biting into the mating surface and fastener head under load, resisting loosening caused by vibration and torque relaxation. This washer measures 0.628 to 0.641 inches inside diameter and 0.971 to 1.073 inches outside diameter, with a nominal thickness of 0.156 inches. It is a standard inch-measurement fastener component used across HVAC, plumbing, electrical, and general mechanical assemblies wherever a 5/8 inch fastener requires positive locking retention. Each package contains 25 washers.

This split lock washer is suited for residential and light commercial trade applications including equipment mounting, panel attachment, pipe hanger hardware, conduit support brackets, and general structural fastening. It is appropriate wherever a 5/8 inch bolt or screw is used in an assembly subject to vibration or dynamic loading. Licensed tradespeople and maintenance technicians use this washer as a standard hardware component during equipment installation, structural mounting, and field service work.

Key Features

• Grade 2 steel construction provides standard mechanical strength for general fastening applications
• Zinc plated finish resists light corrosion in typical indoor and sheltered environments
• Split lock design bites into fastener and mating surface to resist vibration-induced loosening
• Inside diameter range of 0.628 to 0.641 inches fits standard 5/8 inch fasteners
• Outside diameter range of 0.971 to 1.073 inches provides adequate bearing surface
• Sold in a package of 25 for job-site and shop inventory use

Compatibility

Designed as a standard inch-series split lock washer for use with 5/8 inch screws and bolts in general mechanical, HVAC, plumbing, and electrical trade applications.

Installation Notes

Split lock washers are installed by a licensed mechanic, HVAC technician, electrician, or plumber as part of a standard bolted joint assembly. Place the washer between the fastener head or nut and the mating surface before torquing. Always de-energize electrical equipment and shut off relevant fluid or gas supplies before disassembling or assembling fastened joints in live systems. Do not reuse split lock washers that have been fully compressed flat, as the locking function is diminished.