Gibraltar Z8952SS Stainless Steel Square Flat Washer

Product Description

The GIBRALTAR Z8952SS is a stainless steel square flat washer designed for use with 3/8 inch bolts. It features a 2 inch square outer dimension and a 1/4 inch thickness, providing a wide bearing surface that distributes load evenly across the fastened material. The 7/16 inch inside diameter seats cleanly over standard 3/8 inch bolt shanks. Constructed from Grade 18-8 stainless steel with an uncoated finish, this washer resists corrosion in wet or outdoor environments. It is suited for use by plumbers, HVAC technicians, electricians, pool service professionals, and general contractors who require a durable, corrosion-resistant fastener component.

This washer is appropriate for residential and light commercial applications where a large bearing surface is needed to prevent pull-through or surface damage on softer substrates. Common install scenarios include equipment mounting, pipe support bracketing, pool equipment installation, and general structural fastening where stainless hardware is specified. The square profile increases surface contact compared to round washers of similar bolt sizing, making it a practical choice for framing, strut, and panel applications.

Key Features

• Grade 18-8 stainless steel construction resists corrosion in wet and outdoor environments
• 2 inch square outer dimension provides increased load distribution over round washers
• 7/16 inch inside diameter fits standard 3/8 inch bolts
• 1/4 inch thickness adds rigidity under load
• Uncoated finish maintains dimensional tolerances and is compatible with stainless fastener assemblies

Compatibility

Designed as an OEM-style replacement and standard hardware component for use with 3/8 inch bolt assemblies requiring a square flat washer configuration.

Installation Notes

Installation is performed by the applicable licensed trade or general contractor per project specifications. Ensure the mating bolt and nut are also stainless steel to prevent galvanic corrosion in wet environments. De-energize or depressurize any system before accessing fastened components. Follow applicable local building codes and manufacturer torque guidelines for the specific assembly.