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The GIBRALTAR Z9185-BEV-SS is a beveled round flat washer designed for 1/2 inch screw applications. Manufactured from Grade 18-8 stainless steel, it delivers corrosion resistance suitable for wet, outdoor, and chemically exposed environments. The beveled seat profile distributes load evenly under fastener heads and nuts, reducing stress concentrations in the mating surface. With an inside diameter of 0.5313 inches and an outside diameter of 1.0000 inches, this washer provides consistent fitment on standard 1/2 inch fasteners. Thickness measures 0.1875 inches. Plumbers, pipefitters, HVAC technicians, and electricians use beveled washers where angled or uneven bearing surfaces require a flush fastener seat.
This washer is suited for general mechanical assembly, pipe flange connections, structural fastening, and equipment mounting in both residential and commercial applications. The 18-8 stainless steel construction makes it appropriate for installations exposed to moisture, mild chemicals, or outdoor conditions where carbon steel hardware would corrode. It is commonly used in HVAC equipment mounting, plumbing fixture installation, electrical panel assembly, and pool equipment fastening where a corrosion-resistant washer is specified.
Designed as an OEM-style replacement or service washer for 1/2 inch screw and bolt applications requiring a beveled round flat washer in Grade 18-8 stainless steel.
Install using standard hand tools appropriate for 1/2 inch fastener assemblies. Power down or de-energize equipment before servicing any fastened assembly on electrical or HVAC components. Ensure the beveled face is oriented toward the angled or chamfered bearing surface to achieve proper seating. Follow applicable NEC, IPC, or IFGC guidelines as required by the specific installation context.
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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