Gibraltar 63606G M16 Flat Washer Case Hardened Steel

Product Description

The GIBRALTAR 63606G is a standard flat washer designed for use with M16 metric fasteners. Manufactured from 1010 case-hardened steel with a black oxide finish, this washer distributes clamp load evenly across the bearing surface, reducing the risk of fastener pull-through and surface damage. The black oxide coating provides moderate corrosion resistance and a low-reflectance appearance suited to exposed mechanical assemblies. With an inside diameter of 17 millimeters, an outside diameter of 35 millimeters, and a thickness of 3 millimeters, it meets standard dimensional requirements for M16 bolt applications in structural, mechanical, and industrial installations.

This washer is used in a wide range of commercial and industrial fastening applications where M16 metric bolts or screws are specified. Typical use cases include machinery assembly, structural steel connections, equipment mounting, and general fabrication work. It is appropriate for both indoor and outdoor assemblies where a durable, black-finished steel washer is required. This is a metric-system component and is not intended for use with standard SAE fasteners.

Key Features

• Case-hardened 1010 steel construction for high load-bearing capacity
• Black oxide finish provides corrosion resistance and low-reflectance appearance
• 17 millimeter inside diameter fits M16 metric bolts and screws
• 35 millimeter outside diameter distributes clamping load across a broad bearing surface
• 3 millimeter thickness meets standard dimensional requirements for M16 flat washers
• Metric system component for use in metric fastening applications

Compatibility

Designed for use with M16 metric fasteners in standard flat washer applications across mechanical, structural, and industrial assembly work.

Installation Notes

Installation is performed by machinists, millwrights, ironworkers, and general mechanical tradespeople. Place the washer between the fastener head or nut and the mating surface before torquing the fastener to the specification required by the assembly design. Inspect washers for cracks or deformation before use and do not substitute this metric component in applications specifying SAE hardware.