Value Collection 50WUSSGPK Uss Flat Washer Steel Galvanized

Product Description

The VALUE COLLECTION 50WUSSGPK is a USS flat washer designed for use with 1/2 inch screw sizes. Manufactured from steel with a galvanized finish, this washer provides a broad bearing surface that distributes load and reduces the risk of fastener pull-through or surface damage. The USS series follows a wider outer diameter standard compared to SAE washers, making it a common choice when extra load distribution is needed. It meets ASME B18.22.1 dimensional standards. Inside diameter is 9/16 inches, outside diameter is 1-3/8 inches, and thickness is 7/64 inches. Plumbers, electricians, HVAC techs, and general contractors use these in structural and mechanical assemblies throughout commercial and residential construction.

This flat washer is suited for general-purpose fastening applications across trade and industrial settings. It works in wood framing, mechanical equipment mounting, pipe hanger systems, electrical panel installations, and HVAC equipment anchorage where a wide bearing surface is required under a bolt head or nut. The galvanized finish provides corrosion resistance suitable for indoor and moderately exposed environments. Sold individually per package, with a minimum order quantity of 100 pieces.

Key Features

• USS flat washer standard provides wider OD than SAE for greater load distribution
• Steel construction with galvanized finish for corrosion resistance
• Meets ASME B18.22.1 dimensional standard
• Inside diameter: 9/16 inches — fits 1/2 inch screw or bolt shank
• Outside diameter: 1-3/8 inches; thickness: 7/64 inches
• Suitable for general mechanical, structural, and trade fastening applications

Compatibility

Designed for use with 1/2 inch screws and bolts in standard inch-measurement fastener assemblies conforming to ASME B18.22.1.

Installation Notes

Install between the fastener head or nut and the mating surface to distribute clamp load. Ensure the washer sits flat and concentric with the fastener before torquing. Use with fasteners rated for the application load — do not substitute washer size for a structural connection requirement. Follow applicable codes such as NEC, IPC, or IFGC for fastener and hanger requirements specific to your trade.