Bowmalloy 500011 Uss Flat Washer 1-1/4 in Carbon Steel

Product Description

The BOWMALLOY 500011 is a USS flat washer designed for use with 1-1/4 inch fasteners in structural and general mechanical applications. Manufactured from Grade 8 carbon steel with a yellow zinc chromate finish, this washer distributes load across the bearing surface and resists corrosion in demanding environments. It meets ASTM F436 fastener standards, making it appropriate for structural bolting work where dimensional and material compliance matters. The washer weighs approximately 0.01 pounds and is sold individually, with a minimum order quantity of 10 pieces. Installers working on steel connections, equipment mounting, or structural assemblies will find this a dependable, code-referenced component.

This washer is suited for structural steel fabrication, heavy equipment assembly, and general industrial fastening applications that call for a wide-bearing USS-pattern washer. The yellow zinc chromate finish provides baseline corrosion resistance for indoor and moderately exposed environments. Its Grade 8 carbon steel construction makes it compatible with high-strength bolt assemblies where load distribution across a wide washer face is required.

Key Features

• USS flat washer pattern with a wide outside diameter for increased load distribution
• Grade 8 carbon steel construction for high-strength fastening assemblies
• Yellow zinc chromate finish provides corrosion resistance
• Meets ASTM F436 fastener standard for structural applications
• Inside diameter of 1.375 inches fits 1-1/4 inch screw or bolt shank
• Sold per piece with a minimum order quantity of 10

Compatibility

Designed as a USS-pattern flat washer for use with 1-1/4 inch fasteners in structural and general mechanical bolted connections per ASTM F436 requirements.

Installation Notes

Installation is performed by ironworkers, millwrights, pipefitters, or general mechanical trades depending on the application. Always power down or de-energize associated equipment before working on bolted assemblies. Confirm washer orientation and seating against the bearing surface before torquing the fastener. Follow applicable structural or mechanical codes, including AISC or OSHA standards, for bolt assembly procedures.