Value Collection 33566 Split Lock Washer 5/8 in Grade 5

Product Description

The VALUE COLLECTION 33566 is a Grade 5 steel split lock washer sized for 5/8 inch screws. Split lock washers are installed under a nut or bolt head to resist loosening caused by vibration and torque relaxation. The washer's split design bites into the fastener and mating surface as the joint is tightened, creating a mechanical lock. With an inside diameter range of 0.628 to 0.641 inches and a maximum outside diameter of 1.087 inches, this washer is dimensionally consistent with standard inch-series hardware. Thickness is 0.188 inches. The uncoated finish is typical for general indoor and sheltered mechanical assemblies where corrosion resistance is not the primary concern.

This split lock washer is suited for mechanical, structural, and equipment assembly work across HVAC, plumbing, electrical, and general trade applications. It is used wherever a 5/8 inch fastener requires vibration resistance, including equipment mounting, panel attachment, and component brackets. Licensed tradespeople and mechanical assemblers install this type of hardware during equipment installation and maintenance. Minimum order quantity is 100 pieces per order, sold as a single package quantity.

Key Features

• Grade 5 steel construction for reliable mechanical strength in standard fastening applications
• Split lock design resists loosening under vibration and dynamic loads
• Inside diameter range of 0.628 to 0.641 inches fits standard 5/8 inch screws and bolts
• Maximum outside diameter of 1.087 inches suits standard 5/8 inch fastener bearing surfaces
• 0.188 inch thickness provides consistent spring action when compressed
• Uncoated finish for use in general-purpose, non-corrosive environments

Compatibility

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

Installation Notes

Install the split lock washer between the nut or bolt head and the mating surface before torquing the fastener to its final value. Do not reuse split lock washers that have been fully compressed flat, as the locking action is reduced. Follow applicable mechanical codes and equipment manufacturer fastener specifications for proper torque. Always de-energize or isolate equipment before performing any fastener work on energized assemblies.