Gibraltar 42601G Standard Flat Washer 1/4 Inch Black Oxide

Product Description

The GIBRALTAR 42601G is a standard flat washer designed for use with 1/4 inch screws and fasteners. Manufactured from case-hardened 1010 steel with a black oxide finish, this washer distributes load across a fastened joint, reduces surface damage under a bolt or nut head, and helps resist loosening under vibration. The inside diameter measures 9/32 inches, outside diameter measures 5/8 inches, and thickness is 1/8 inches. It is suited for general mechanical assembly, structural connections, and equipment maintenance work across plumbing, HVAC, electrical, and general trade applications.

This washer fits standard 1/4 inch fastener assemblies encountered in residential and light commercial construction, equipment mounting, and panel or bracket installations. The black oxide finish offers mild corrosion resistance suitable for indoor and sheltered environments. Tradespeople and maintenance technicians reach for this washer when assembling equipment frames, securing panels, or replacing worn hardware during service calls. Sold individually per package with a minimum order quantity of 10 units.

Key Features

• Case-hardened 1010 steel construction resists deformation under load
• Black oxide finish provides mild corrosion resistance for indoor and sheltered use
• Standard flat washer geometry distributes clamping load and protects mating surfaces
• 9/32 inches inside diameter fits standard 1/4 inch screw shanks with proper clearance
• 1/8 inches thickness provides consistent bearing surface across common fastener assemblies
• Inch measurement system; conforms to standard flat washer dimensional conventions

Compatibility

Designed for use with 1/4 inch screws and bolts in standard flat washer applications across general mechanical, HVAC, plumbing, and electrical trade assemblies.

Installation Notes

Installation requires no specialized tools beyond standard hand or power wrenches appropriate to the fastener type. Ensure mating surfaces are clean and free of debris before seating the washer. For corrosive or outdoor environments, verify that the black oxide finish is adequate for the service condition or select an appropriately rated washer. Follow applicable fastener torque requirements specified by the equipment manufacturer or relevant code.