washer, machine component that is used in conjunction with a screw fastener such as a bolt and nut and that usually serves either to keep the screw from loosening or to distribute the load from the nut or bolt head over a larger area. For load distribution, thin flat rings of soft steel are usual.
What does a spring washer look like?
Spring and locking washers. A washer with a slight conical shape, which provides an axial force when deformed. The surface may be serrated, which will have improved locking capabilities. Similar to a Belleville, except the washer is curved in only one direction, therefore there are only four points of contact.
What is spherical washer?
Spherical washers from SKF are designed to create an exact, parallel plane between the bolt head and the face of the nut. These washers automatically adjust and compensate for the angular deviation between the planes and prevent the bolt from bending.
What type of washer is used to span oversized holes?
Flat washers
Flat washers are used to improve stress distribution, and to span large clearance holes.
Which way do curved washers go?
the curved washers should be placed to follow the curve of the hole, not go against it.
What is a fender washer?
A fender washer is a flat washer with a larger outer diameter in proportion to its center hole. They are made from a thinner gauge metal than most flat washers and are designed to spread the load on thin sheet metal. Interestingly, they are named after their use on automobile fenders.
Does the washer go on the bolt or nut side?
If there is only one washer used with a nut/bolt, it usually goes on the nut side. The nut in most circumstances is more movable, and is more commonly turned to tighten the assembly. The washer helps prevent damage to the surface of the object being fastened.
Why use a washer with a nut and bolt?
The primary purpose of most washers is to evenly distribute the load of the threaded fastener with which they are used. Threaded fasteners stress the material in which they are driven. Washers reduce the risk of such damage by evenly distributing the fastener’s load across the surface of the material.
Should a flat washer be used with a spring washer?
The order should be bolt head, flat washer, materials being clamped, flat washer, spring washer, nut. If you only have one flat washer per bolt, and if the material next to the bolt head is sufficiently hard to resist deformation, then the one flat washer should be on the nut side.
Does the washer go next to the nut or bolt?
The washer helps prevent damage to the surface of the object being fastened. In most cases where the bolt is easier to turn, the bolt has a round head that will cause less damage anyway. For the same reason, lock washers always go on the nut side to stop the nut moving.
What are the different types of washers?
There are three main types of washers: plain washers, spring washers and lock washers. Within each of these categories are more specialized forms that serve unique purposes.
What is a flat washer?
Description: Also known as Type A plain washers, the flat washer is what most people picture when thinking of a typical washer. They are circular and flat, of varying thicknesses, with a central hole to accommodate a bolt. Application: Used to distribute force or correct a hole size.
What does a C washer look like?
Description: A C-washer resembles a flat washer, but it has a slot cut from the center hole to form a “C” shape. Application: Used any time a washer might need to be removed, adjusted or replaced without removing the fastener.
What kind of washer do you use to fill holes?
If a hole is too big for the fastener, a plain washer can be used to correct the size difference. Description: Also known as Type A plain washers, the flat washer is what most people picture when thinking of a typical washer.
