Bowmalloy 500102 Uss Flat Washer 3/8 Inch Carbon Steel

Product Description

The BOWMALLOY 500102 is a 3/8 inch USS flat washer manufactured from Grade 8 carbon steel with a yellow zinc chromate finish. It provides a broad bearing surface to distribute load and prevent fastener pull-through in structural and general mechanical assemblies. The 0.396 inch inside diameter fits 3/8 inch fasteners, and the 1.000 inch outside diameter delivers reliable load distribution. At 0.078 inches thick, the washer meets the wider-diameter USS series standard, making it suitable for applications where a larger outer diameter is required compared to SAE-series washers. Licensed trades and industrial maintenance personnel use these washers in structural, equipment, and machinery fastening work.

This washer is appropriate for residential construction, commercial structural connections, and general industrial maintenance where a 3/8 inch fastener with a wide-bearing-surface washer is needed. The USS pattern is commonly specified when working with bolts in wood framing, steel structure, and equipment mounting. The yellow zinc chromate finish provides moderate corrosion resistance for indoor and light-exposure environments. Compliance with ASTM F436 makes this washer suitable for structural bolting applications where that standard is called out in project specifications.

Key Features

• USS series flat washer - wider outer diameter than SAE equivalents for greater load distribution
• Grade 8 carbon steel construction for high-strength fastening applications
• Yellow zinc chromate finish provides moderate corrosion resistance
• Meets ASTM F436 fastener standard
• 0.396 inch inside diameter for precise fit on 3/8 inch fasteners
• 1.000 inch outside diameter and 0.078 inch thickness per USS dimensional spec

Compatibility

Designed for use with 3/8 inch screw and bolt fasteners in structural and general mechanical assemblies where the USS flat washer pattern and ASTM F436 compliance are required.

Installation Notes

Install by a qualified tradesperson following applicable structural or mechanical fastening specifications. Ensure the fastener and mating hardware are compatible in grade and material to avoid galvanic or strength mismatches. Do not reuse washers that show deformation, cracking, or coating damage. Follow project specifications and applicable codes when used in structural bolting applications.