Bowmalloy BOW500010 Uss Flat Washer 1-1/8 Inch Steel 10-pack

Product Description

The BOWMALLOY BOW500010 is a USS flat washer designed for use with 1-1/8 inch screws and fasteners. Manufactured from steel with a Bowma-Guard protective finish, this washer meets ASTM F436 standards and carries a Rockwell C38-42 hardness rating, making it suited for structural and heavy-duty fastening applications. The washer measures 1.25 inches inside diameter, 2.75 inches outside diameter, and 0.177 inches thick. It ships in a package quantity of 10. Licensed tradespeople and contractors working with large-diameter fasteners rely on this part for consistent load distribution and corrosion resistance in demanding installations.

This USS flat washer is used in construction, structural steel work, and industrial equipment assembly wherever 1-1/8 inch fasteners require a broad bearing surface. The oversized outer diameter relative to the screw size is characteristic of USS-series washers, which are specified when load distribution across a larger surface area is required. Typical applications include steel framing connections, heavy equipment mounting, and anchor bolt installations. The Bowma-Guard finish provides a layer of corrosion protection suited to interior and sheltered exterior environments.

Key Features

• ASTM F436 fastener standard compliance for structural applications
• Rockwell C38-42 hardness for reliable load-bearing performance
• Bowma-Guard protective finish for corrosion resistance
• USS series geometry with 2.75 inch OD for broad load distribution
• Material Grade 9 steel construction
• Packaged in quantities of 10 per unit

Compatibility

Designed as an OEM-style replacement or standard-service USS flat washer for use with 1-1/8 inch screw and bolt fasteners in structural and industrial fastening applications.

Installation Notes

Installation is performed by licensed contractors, ironworkers, or maintenance technicians working with large-diameter fastener assemblies. Ensure the mating fastener and nut are the correct grade and size before assembly. Follow applicable building codes and structural specifications when torquing fasteners in load-bearing connections. Inspect washers for surface defects or damage before use.