Bowmalloy BOW500113 Sae Flat Washer 1/4 in Steel 200pk

Product Description

The BOWMALLOY BOW500113 is a 1/4 inch screw size SAE flat washer manufactured from steel with a Bowma-Guard finish. Built to ASTM F436 standards, this washer delivers consistent load distribution and surface protection across a wide range of fastening applications. The Bowma-Guard finish provides corrosion resistance suited to both indoor and outdoor installations. With a Rockwell C38-42 hardness rating, it handles high-clamp-load assemblies without deforming under torque. Each package contains 200 washers, making this SKU appropriate for job-site stock or production-line use by contractors and tradespeople working with structural or mechanical fastening systems.

This SAE flat washer is used wherever a 1/4 inch fastener requires a broader bearing surface to prevent pull-through or surface damage. Typical applications include HVAC equipment mounting, structural connections, plumbing fixture installations, and general mechanical assemblies requiring inch-series hardware. The SAE outside diameter provides a wider bearing surface compared to USS equivalents at the same screw size, which is relevant when working with softer base materials or oversized clearance holes.

Key Features

• ASTM F436 fastener standard for consistent dimensional and mechanical compliance
• Rockwell C38-42 hardness resists deformation under high-clamp-load conditions
• Bowma-Guard finish provides corrosion resistance for extended service life
• SAE washer type with 0.2710 inch ID and 0.6250 inch OD for proper 1/4 inch screw fitment
• 0.0730 inch thickness maintains consistent stack height in assemblies
• Package quantity of 200 supports bulk job-site or shop inventory needs

Compatibility

Designed for use with 1/4 inch screw fasteners in inch-series mechanical and structural assemblies conforming to SAE washer dimensional standards.

Installation Notes

Installation is performed by licensed tradespeople or qualified mechanics using standard hand or power tools. Always de-energize or depressurize the assembly before disassembling fastened joints. Follow applicable code requirements, including NEC or IFGC references where fastener hardware is used in equipment mounting. Do not substitute SAE washers for USS or metric equivalents without verifying inside diameter, outside diameter, and thickness compatibility with the fastener and joint design.