Bowmalloy BOW500023 Sae Flat Washer 1-1/8 Inch Steel

Product Description

The BOWMALLOY BOW500023 is a heavy-duty SAE flat washer designed for structural and mechanical fastening applications. Manufactured from steel with a Material Grade 9 rating and a Bowma-Guard protective finish, this washer meets ASTM F436 standards for structural bolting. It fits a 1-1/8 inch screw size with an inside diameter of 1-3/16 inches (1.1870 inches decimal), an outside diameter of 2-1/4 inches (2.2500 inches decimal), and a thickness of 9/64 inches (0.1480 inches decimal). Hardness is rated at Rockwell C38-42. Sold in packages of 10, this washer is suited for contractors, ironworkers, and mechanical tradespeople working on bolted structural connections.

This washer is appropriate for use in structural steel connections, heavy equipment assembly, and industrial fastening where SAE flat washer geometry and ASTM F436 compliance are required. The Bowma-Guard finish provides corrosion resistance suited for both interior and exterior applications. Licensed trades and general contractors installing structural assemblies will find this washer compatible with standard 1-1/8 inch bolt and fastener configurations.

Key Features

• Meets ASTM F436 standard for structural flat washers
• Material Grade 9 steel construction with Rockwell C38-42 hardness
• Bowma-Guard protective finish for corrosion resistance
• Inside diameter of 1-3/16 inches fits 1-1/8 inch screw size
• Outside diameter of 2-1/4 inches for broad load distribution
• Sold in a package quantity of 10

Compatibility

Designed as an OEM-style replacement or standard-fit washer for 1-1/8 inch bolt and fastener assemblies requiring SAE flat washer geometry and ASTM F436 compliance.

Installation Notes

Installation should be performed by qualified mechanical or structural trades following applicable codes and torque specifications for the bolt grade in use. Always inspect washer seating surfaces for burrs or debris before assembly. Do not substitute this washer in applications requiring different fastener standards without verifying load and hardness requirements. Follow AISC or applicable structural standards when used in steel connection assemblies.