Gibraltar Z8954SS Square Flat Washer 1/2 in Bolt 2 in

Product Description

The GIBRALTAR Z8954SS is a stainless steel square flat washer designed for use with 1/2-inch bolts. It features a 2-inch square outer dimension and a 9/16-inch inside diameter, providing a broad bearing surface that distributes clamping load evenly across the fastened material. The washer is 1/4 inch thick and manufactured from Grade 18-8 stainless steel, offering solid corrosion resistance without any additional coating. It is used by tradespeople across plumbing, HVAC, electrical, and general construction applications where a durable, corrosion-resistant fastener component is required.

This square flat washer is suited for both indoor and outdoor installations where standard round washers do not provide adequate load distribution or where a square bearing surface is preferred. The uncoated 18-8 stainless steel construction makes it a practical choice for installations exposed to moisture or mild corrosive environments. It is commonly used in equipment mounting, structural fastening, and mechanical assembly work across residential and light commercial job sites.

Key Features

• Grade 18-8 stainless steel construction for corrosion resistance without coatings
• 2-inch square outer dimension provides wide load distribution
• 9/16-inch inside diameter fits standard 1/2-inch bolts
• 1/4-inch thickness adds rigidity and bearing strength
• Uncoated finish eliminates risk of coating delamination in service

Compatibility

Designed for use with 1/2-inch bolts requiring a square flat washer with a 9/16-inch inside diameter and 2-inch square bearing surface.

Installation Notes

Install using standard hand tools appropriate for the fastener size. Ensure mating surfaces are clean and free of debris before seating the washer. Verify that the bolt grade is compatible with the 18-8 stainless steel washer to avoid galvanic corrosion when pairing with dissimilar metals. Follow applicable mechanical or structural codes for the specific application.