Gibraltar 42612G Standard Flat Washer Size 4 Steel

Product Description

The GIBRALTAR 42612G is a Size 4 screw standard flat washer manufactured from case-hardened 1010 steel with a black oxide finish. It features an inside diameter of 1/8 inches, an outside diameter of 5/16 inches, and a thickness of 5/64 inches. The black oxide finish provides moderate corrosion resistance and reduces light reflection in finished assemblies. Weighing approximately 0.02 pounds per piece, this washer is suited for fastening applications where load distribution and surface protection are required. It is sold individually but requires a minimum order of 10 units.

This washer is used in general mechanical, structural, and trade assembly applications where a Size 4 fastener is specified. Typical applications include light-gauge equipment assembly, electrical enclosure hardware, HVAC panel fastening, and plumbing fixture mounting. The inch-system dimensions and standard washer profile make it a common stock item for maintenance, repair, and operations (MRO) inventories across residential and commercial trades.

Key Features

• Case-hardened 1010 steel construction for strength and durability
• Black oxide finish for moderate corrosion resistance and low-glare appearance
• Inside diameter: 1/8 inches — fits Size 4 screws
• Outside diameter: 5/16 inches for effective load distribution
• Thickness: 5/64 inches — standard flat washer profile
• Inch measurement system; UNSPSC Code 31161807

Compatibility

Designed for use with Size 4 inch-system screws. Suitable as a standard flat washer replacement in general fastening and assembly applications requiring a 1/8 inches ID washer.

Installation Notes

Installation requires no specialized tooling beyond a screwdriver or nut driver appropriate for the mating fastener. Ensure the mating surface is clean and flat before seating the washer to prevent uneven load distribution. Black oxide finishes offer limited corrosion protection — consider additional sealing or coating in high-moisture environments. Always follow applicable mechanical and structural codes for the specific application.