Gibraltar 42605G Standard Flat Washer 1/2 in Case Hardened

Product Description

The GIBRALTAR 42605G is a standard flat washer designed for use with 1/2 inch fasteners. Manufactured from 1010 case-hardened steel with a black oxide finish, this washer provides reliable load distribution and corrosion resistance in demanding installation environments. With an inside diameter of 17/32 inches, an outside diameter of 1-1/8 inches, and a thickness of 1/8 inch, it meets standard dimensional requirements for general mechanical and structural fastening applications. At 0.03 pounds per piece, it is a lightweight component suited for high-volume trade work. Licensed tradespeople and maintenance technicians install this washer as part of bolted assemblies across HVAC, plumbing, electrical, and general construction applications.

This washer is suited for residential and commercial fastening applications where a standard 1/2 inch screw or bolt requires load distribution across a bearing surface. The black oxide finish adds mild corrosion resistance and reduces surface glare, making it appropriate for interior mechanical assemblies and equipment mounting. It is commonly used in equipment support structures, panel mounting, pipe hangers, and general mechanical fastening tasks encountered by HVAC technicians, plumbers, and electricians during installation or service work.

Key Features

• Case-hardened 1010 steel construction for durability under load
• Black oxide finish provides mild corrosion resistance
• 17/32 inch inside diameter fits standard 1/2 inch fasteners
• 1-1/8 inch outside diameter distributes clamping load effectively
• 1/8 inch thickness meets standard flat washer dimensional specs
• Inch measurement system for compatibility with standard US fastener sizing

Compatibility

Designed as a standard flat washer for use with 1/2 inch screws and bolts in general mechanical, structural, and equipment fastening applications.

Installation Notes

Install using standard hand or power tools appropriate for the fastener being used. Ensure mating surfaces are clean and free of debris before seating the washer. Follow applicable mechanical codes and manufacturer torque guidelines for the specific fastener assembly. No special tools are required for washer installation.