Gibraltar Z9429 C Washer Black Oxide 2-1/4in Od Steel

Product Description

The GIBRALTAR Z9429 is a C washer manufactured from case hardened steel with a 12L14 material grade and a black oxide finish. Designed for use with 7/16 or 1/2 inch bolts, this washer features an outside diameter of 2-1/4 inches, an inside diameter of 17/32 inches (0.5313 inches), and a thickness of 3/8 inches (0.3750 inches). The black oxide finish provides a degree of corrosion resistance and reduces light reflection. The case hardened surface adds wear resistance under clamping loads. Licensed tradespeople and maintenance professionals install C washers during mechanical assembly, structural fastening, and equipment service work.

The Z9429 C washer is suited for use in mechanical, plumbing, HVAC, and general trade applications where a standard flat washer does not provide adequate bearing surface or where a slotted profile is required to slip over a shaft or bolt without full disassembly. The 7/16 or 1/2 inch bolt compatibility makes it a practical fit for a wide range of trade fastening applications in residential and commercial settings. Each unit is sold individually.

Key Features

• Case hardened 12L14 steel construction for improved wear resistance under load
• Black oxide finish for corrosion resistance and low-glare appearance
• Outside diameter of 2-1/4 inches provides broad clamping surface
• Inside diameter of 17/32 inches fits 7/16 or 1/2 inch bolts
• Thickness of 3/8 inches for consistent load distribution
• Sold in single-unit quantity with a minimum order quantity of 1

Compatibility

Designed for use with 7/16 or 1/2 inch bolts where a C washer profile is specified. Suitable as an OEM-style replacement or service part in mechanical and trade fastening applications requiring a 2-1/4 inch OD, 17/32 inch ID, 3/8 inch thick C washer in case hardened steel.

Installation Notes

C washers are installed by mechanics, HVAC technicians, plumbers, and general tradespeople during assembly or service of bolted connections. Power down or de-energize any associated equipment before servicing fastener assemblies in mechanical or electrical enclosures. Use appropriate torque tools and follow the equipment manufacturer's fastener specifications for the application. Inspect the washer seating surface for burrs or debris before installation to ensure even load distribution.