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The GIBRALTAR Z9094SS is a standard flat washer sized for a No. 10 screw, manufactured from 18-8 stainless steel with a plain finish. It provides a bearing surface that distributes fastener load across a wider area, reducing stress on the mating material and preventing pull-through in sheet metal, structural panel, and mechanical assembly applications. The washer measures 0.2031 inches inside diameter, 0.5000 inches outside diameter, and 0.0938 inches thick. Hardness is rated at Rockwell C36 to C42. Licensed tradespeople and maintenance technicians install this washer wherever corrosion resistance and dimensional consistency are required in fastened assemblies.
This washer suits residential and commercial applications where exposure to moisture, mild chemicals, or outdoor conditions demands a corrosion-resistant fastener component. Common installation scenarios include HVAC equipment panels, plumbing fixture mounting, electrical enclosures, and general mechanical assemblies that require a No. 10 screw with a reliable load-distributing washer. The 18-8 stainless steel grade offers solid resistance to rust and oxidation in typical service environments.
Designed as a standard flat washer for use with No. 10 screws in inch-measurement fastener assemblies requiring 18-8 stainless steel material.
Install using hand tools standard to the fastener trade; no special tooling is required for flat washer placement. Power down or de-energize any equipment before accessing fastened panels or enclosures. Ensure the washer seats flush against the mating surface before torquing the fastener. Follow applicable assembly and safety codes for the specific trade discipline involved in the installation.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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