Gibraltar Z9103BR Standard Flat Washer 1 in Brass

Product Description

The GIBRALTAR Z9103BR is a standard flat washer sized for 1-inch screws, manufactured from solid brass with a plain finish. It provides load distribution and surface protection between a fastener head or nut and the mating surface, reducing pull-through and minimizing galvanic concerns in corrosion-prone environments. With an inside diameter of 1.031 inches, an outside diameter of 2 inches, and a thickness of 0.1875 inches, this washer conforms to standard flat washer geometry for inch-series fasteners. Plumbers, pipefitters, electricians, and general mechanical contractors routinely specify brass hardware where moisture exposure or dissimilar-metal contact is a factor.

This washer is suited for residential and light commercial mechanical installations where brass fastener hardware is required. Common applications include plumbing fixture mounting, electrical panel and conduit work, HVAC equipment assembly, and general structural fastening where a non-ferrous washer is specified. The plain finish leaves the brass surface uncoated, making it appropriate where soldering or additional finishing will be applied in the field.

Key Features

• Solid brass construction resists corrosion in wet and humid environments
• Plain finish compatible with soldering and field-applied coatings
• Inside diameter of 1.031 inches fits 1-inch nominal screw and bolt sizes
• Outside diameter of 2 inches provides broad load distribution across the fastened surface
• Thickness of 0.1875 inches delivers consistent clamping geometry
• Inch measurement system; conforms to standard flat washer dimensions

Compatibility

Designed as an OEM-style and general-use flat washer for 1-inch screw and bolt sizes in inch-series fastener assemblies.

Installation Notes

Installation is performed by licensed plumbers, electricians, HVAC technicians, or mechanical contractors depending on the application. De-energize or shut off any system before fastener service begins. Ensure the mating surface is clean and free of debris before seating the washer to achieve proper clamping load. Use fastener torque values specified by the equipment manufacturer or applicable code for the installation.