Bowmalloy 500007 3/4 in Uss Flat Washer Carbon Steel

Product Description

The BOWMALLOY 500007 is a 3/4 inch USS flat washer manufactured from carbon steel with a yellow zinc chromate finish. USS flat washers are used to distribute load across a fastener bearing surface, reducing the risk of pull-through and surface damage under bolt or nut seating pressure. This washer measures 0.7750 inches inside diameter and 2.0000 inches outside diameter, with a thickness of 0.1400 inches. It meets ASTM F436 fastener standards. Suitable for structural and general mechanical assembly applications, it is typically installed by millwrights, ironworkers, pipefitters, electricians, and general construction trades.

This washer is sized for 3/4 inch fasteners and follows USS (United States Standard) dimensional specifications, which call for a larger outside diameter than SAE washers of the same bolt size. The yellow zinc chromate finish provides moderate corrosion resistance, making it appropriate for interior structural connections, equipment mounting, and general fabrication work where mild environmental exposure is expected. Material Grade 8 carbon steel construction supports use in higher-load bolted connections.

Key Features

• USS series sizing provides a wider load-bearing surface than SAE equivalent
• Carbon steel construction, Material Grade 8, for use in structural bolted assemblies
• Yellow zinc chromate finish for moderate corrosion resistance
• Inside diameter of 0.7750 inches fits standard 3/4 inch fasteners
• Outside diameter of 2.0000 inches for broad load distribution
• Meets ASTM F436 fastener standard

Compatibility

Designed as an OEM-style replacement or standard-service USS flat washer for use with 3/4 inch bolts and nuts in structural, mechanical, and general construction assemblies conforming to inch measurement systems.

Installation Notes

Installation does not require specialized tools beyond standard wrenches or impact drivers used for the associated fastener. Ensure the washer is seated flat against the bearing surface before torquing the fastener. Always de-energize and lock out equipment before servicing fastened assemblies on mechanical or electrical systems. Follow applicable structural and mechanical codes for fastener torque requirements based on the bolt grade and application.