Bowmalloy 500113 Sae Flat Washer 1/4 in Carbon Steel

Product Description

The BOWMALLOY 500113 is a 1/4 inch SAE flat washer manufactured from Grade 8 carbon steel with a yellow zinc chromate finish. Flat washers distribute load across a fastened joint, reducing surface damage and preventing fastener pull-through. This washer meets ASTM F436 dimensional and mechanical standards, making it appropriate for structural and high-load fastening applications. The yellow zinc chromate coating provides a baseline level of corrosion resistance in mild-exposure environments. Mechanics, ironworkers, and general contractors commonly install washers of this type in both interior and exterior assemblies where a reliable, standardized bearing surface is required.

This SAE flat washer is suited for general industrial, structural, and mechanical fastening applications using 1/4 inch fasteners. The SAE series provides a moderately sized bearing surface relative to the screw diameter, fitting situations where a compact washer profile is preferred over a USS wide-body design. Typical uses include equipment fabrication, framing connections, and maintenance-repair-operations work across commercial and light industrial settings.

Key Features

• Grade 8 carbon steel construction for high-strength fastening applications
• Yellow zinc chromate finish for mild corrosion resistance
• Meets ASTM F436 standard for dimensional and mechanical compliance
• SAE series washer profile sized for 1/4 inch screws
• Inside diameter of 0.2710 inches for consistent fastener fitment
• Outside diameter of 0.6250 inches providing controlled load distribution

Compatibility

Designed as an SAE-series flat washer for use with 1/4 inch fasteners in applications conforming to ASTM F436 requirements and inch-measurement fastener systems.

Installation Notes

Install using standard hand tools; seat the washer flat against the bearing surface before torquing the fastener. Power down or de-energize any equipment before performing fastener work in electromechanical assemblies. Follow applicable structural or mechanical codes, such as AISC or relevant OSHA fastener-safety guidelines, when used in load-bearing connections. Inspect the zinc chromate coating for damage before installation and replace any washer showing corrosion or deformation.