Bowmalloy BOW500102 Uss Flat Washer 3/8 Inch Steel

Product Description

The BOWMALLOY BOW500102 is a 3/8 inch screw size USS flat washer manufactured from steel with a Bowma-Guard finish. It is designed to distribute load across a fastened joint, reduce surface damage, and resist corrosion in demanding applications. The washer meets ASTM F436 standards and carries a Rockwell C38-42 hardness rating, making it suited for structural and heavy-duty mechanical assemblies. Licensed tradespeople and contractors install this type of washer in steel construction, equipment mounting, and industrial fastening work where a broader bearing surface is required under bolt heads or nuts.

This washer is intended for use in general industrial, commercial construction, and structural applications where USS-standard flat washers are specified. The Bowma-Guard finish provides added corrosion resistance compared to plain steel, making it appropriate for environments with moderate exposure to moisture or contaminants. It is commonly installed by ironworkers, millwrights, electricians, and mechanical contractors working on steel-framed structures, equipment bases, and utility installations.

Key Features

• USS flat washer type for broad load distribution under fastener heads and nuts
• Steel construction with Bowma-Guard finish for corrosion resistance
• Meets ASTM F436 fastener standard for structural applications
• Rockwell C38-42 hardness for reliable performance under load
• Inside diameter of 0.3960 inches fits 3/8 inch fasteners with standard clearance
• Outside diameter of 1.0000 inches provides wide bearing surface

Compatibility

Designed as a standard USS flat washer for use with 3/8 inch screws and bolts in structural and industrial fastening assemblies per ASTM F436 specifications.

Installation Notes

Installation is performed by licensed tradespeople or qualified contractors as part of bolted structural or mechanical assemblies. Always de-energize and lock out equipment before working in or near electrical or mechanical systems. Follow applicable building codes and structural specifications when selecting washer placement and fastener torque requirements. Do not reuse washers that show signs of deformation, cracking, or finish degradation.