Jergens 31906 Standard Flat Washer 5/8 in Steel Plain

Product Description

The JERGENS 31906 is a standard flat washer designed for use with 5/8-inch screws and fasteners. Manufactured from 1010 steel with a plain finish, this washer distributes load across the bearing surface to reduce fastener pull-through and protect the workpiece. The inside diameter measures 21/32 inches, the outside diameter measures 1-3/8 inches, and the thickness is 1/8 inch. It is sized to inch-system standards and suits typical mechanical and structural fastening applications. Maintenance technicians, millwrights, and general contractors install these washers routinely as part of bolted assemblies.

This flat washer is used in residential and commercial construction, light fabrication, equipment assembly, and general maintenance work. It is appropriate wherever a 5/8-inch fastener requires a bearing surface that spreads load or prevents loosening. The plain finish makes it suitable for interior applications and environments where corrosion resistance is not a primary concern.

Key Features

• Standard flat washer geometry for 5/8-inch screw size
• 1010 steel construction provides reliable strength for general fastening
• Plain finish - suitable for interior and dry-environment use
• Inside diameter: 21/32 inches; outside diameter: 1-3/8 inches; thickness: 1/8 inch
• Inch-system dimensions for compatibility with standard inch-series fasteners

Compatibility

Designed as a standard flat washer for use with 5/8-inch inch-series screws and bolts in general mechanical and structural fastening applications.

Installation Notes

Install with the washer seated flat against the bearing surface before tightening the fastener. Ensure the mating surface is clean and free of debris to maintain even load distribution. No special tools are required beyond a standard wrench or socket set appropriate for the fastener being used. Follow applicable building or mechanical codes for torque and assembly requirements specific to the joint design.