Type
The specific design or configuration of the washer, such as flat, lock, or wave.
Component Flat Washer
Originally designed for the tool and die industry this type of washer is thicker than average washers. It was used on tools to machine objects and needed to be sturdy and strong. The general thickness of this washer is around 1/8", which increases strength and load distribution properties and is why they are used in industrial mechanical, machinery, and power transmission uses.
Fender Washer
Fender washers feature a larger than normal outer diameter to optimize load distribution on thin mating surfaces such as sheet metal.
General Purpose Flat Washer
Encompasses USS and SAE washers of low carbon designed to meet all purpose low strength fastening.
Machine Screw Flat Washer
Machine screw flat washers are the smallest kind of flat washer, used in industrial applications to distribute the load of small fasteners like machine screws.
Machinery Bushing
Machinery bushings are installed on shafts to reduce wear and provide accurate spacing.
Non-Metal Flat Washer
Encompasses any non-metal, usually fiber, nylon, or PVC, USS and SAE washers designed to meet all purpose low strength fastening.
Specialty Flat Washer
These washers fulfill a special need and differ in thickness, diameter and material to meet differing needs.
Structural Flat Washer
To be considered a structural washer the fastener must meet ASTM F436 standards for the high forces in construction. These washers can be used with ASTM A325 and A490 bolts.
Williams Washer
This type is a thick flat washer that has a beveled edge around the outer diameter for safety of the operator hands. It is used in spacing operations and is a machined as opposed to stamped, giving in closer tolerances and extra strength.
