Gibraltar Z8808 M8 Extra Thick Flat Washer Black Oxide

Product Description

The GIBRALTAR Z8808 is an M8 extra thick flat washer engineered for applications requiring additional load distribution and surface protection. Manufactured from 1010 grade case-hardened steel with a black oxide finish, this washer provides improved hardness and corrosion resistance compared to standard flat washers. With an inside diameter of 8.4 millimeters, an outside diameter of 16 millimeters, and a thickness of 3 millimeters, the Z8808 is built to metric specifications and suits fastening assemblies where a thicker bearing surface is needed. Tradespeople working in mechanical, structural, and equipment installation applications rely on this washer to prevent fastener pull-through and protect mating surfaces under load.

The Z8808 is suited for use in mechanical assemblies, structural connections, and equipment mounting scenarios where M8 metric fasteners are specified. The extra thick profile makes it appropriate for softer base materials or high-vibration environments where a standard washer would offer insufficient bearing surface. It is commonly used by millwrights, mechanical contractors, and equipment technicians in both light industrial and commercial settings.

Key Features

• Extra thick 3 millimeter profile for increased load distribution
• 1010 grade case-hardened steel construction for improved surface hardness
• Black oxide finish reduces surface corrosion and light reflection
• Metric sizing: 8.4 millimeter ID, 16 millimeter OD, compatible with M8 fasteners
• UNSPSC Code 31161807 for procurement and catalog classification

Compatibility

Designed for use with M8 metric screws and bolts in mechanical and structural fastening assemblies requiring an extra thick flat washer with metric dimensions.

Installation Notes

Installation is performed by any trade requiring M8 metric fastener assemblies, including millwrights, mechanical contractors, and general construction trades. Ensure the mating surface is clean and free of debris before seating the washer. Do not exceed the rated load capacity of the fastener assembly. Torque fasteners according to the fastener manufacturer specifications and applicable project standards.