Gibraltar Z9202U Flat Washer 3/8 Inch Steel Black Oxide

Product Description

The GIBRALTAR Z9202U is a standard flat washer designed for use with 3/8-inch screws and fasteners. Manufactured from steel with a black oxide finish, this washer distributes load across the fastener bearing surface to reduce stress on the mating material and prevent pull-through. The black oxide coating provides moderate corrosion resistance and a dark, non-reflective appearance suited to general mechanical and structural applications. At 0.04 pounds, it is a lightweight hardware component that installs quickly in a wide range of assembly, mounting, and fastening tasks encountered in trade and industrial work.

This washer is a standard flat washer sized for 3/8-inch fasteners, making it applicable across HVAC equipment mounting, plumbing bracket assembly, electrical panel work, pool equipment installation, and general mechanical assembly. It is appropriate for residential and light commercial applications where a steel flat washer with a black oxide finish is specified. The inch measurement system designation confirms compatibility with standard SAE and inch-fraction fastener hardware commonly used in North American trade work.

Key Features

• Standard flat washer profile distributes clamp load and protects mating surfaces
• Steel construction provides strength and durability for general fastening applications
• Black oxide finish offers moderate corrosion resistance and a dark non-reflective surface
• 13/32-inch inside diameter fits 3/8-inch screw shanks with standard clearance
• 1-1/16-inch outside diameter provides broad load distribution across the bearing surface
• 3/16-inch thickness delivers consistent support without excessive stack height

Compatibility

Designed as a standard flat washer for use with 3/8-inch screws and bolts in inch-measurement fastener assemblies across general mechanical, structural, and equipment-mounting applications.

Installation Notes

Install using standard hand tools appropriate to the fastener type. Verify that the inside diameter clears the fastener shank freely before seating. Power down or de-energize any equipment before working in areas where live components are present. Follow applicable codes and the equipment manufacturer guidelines for fastener torque and assembly sequence.