Do you need a washer under a bolt head?

Do you need a washer under a bolt head?

If you’re doing it correctly and holding the bolt stationary, only the nut needs a washer because it’s the only part moving. A washer is used under the bolt head if the entire bolt or it’s supports will be moving (flight control rod ends come to mind), or if the part is susceptible to corrosion.

Can you use a nut without a washer?

In some cases not using a washer with a nut may be okay. In other cases the washer may be necessary to hold something in place, or to prevent the nut from receding into its screws hole. Also a washer, especially a rubber washer, could be used to create a watertight seal.

Do I need a washer with nut and bolt?

Often the fastener will need a washer between the nut and the bolt to distribute the load. Sometimes washers are used between the bolt head and the material without a nut. Washers reduce the wear on the hole and stop the inward pressure on softer materials. In addition, the washer can stop the bolt from coming undone.

Should a lock washer be used with a flat washer?

In general, I use a flat washer under a split locking washer to protect the base material, plating, or coating from damage caused by the split washer action. I may also use the flat washer to distribute the fastener load or ensure the split washer does not fall or grind into a larger clearance hole feature.

What is the purpose of a washer on a screw?

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.

Are flat washers directional?

Yes, they are directional, based on the stamping.

What is the difference between a flat washer and a spring washer?

Plain and spring washers are both used to distribute the load of a fastener. The difference lies in their shape. Plain washers are flat, whereas spring washers are curved. Spring washers are unique because they provide an axial load that counters vibrations and, thus, prevents fasteners from loosening.

What is the difference between a flat washer and a lock washer?

Flat and lock washers are two of the most common types of washers. A flat washer is a basic washer that’s flat on both sides. A lock washer is a semi-coiled washer that’s used to secure bolts in place.

Should a flat washer be used with a lock washer?

Flat washers spread out the load of the tension to prevent pull through or bending whats being fastened, but makes lock washers useless. Yes you may use a flat washer with a lock washer, especially if you are using the lock washer to hold two wooden pieces together.

What is the difference between a lock and flat washer?

How does a flat washer work?

Flat washers aren’t curved, nor do they protrude. Rather, they are completely flat on both sides. This flat design makes them highly effective at distributing loads. Without a washer, the compressive forces of a bolt will be applied to the underside of the bolt’s head.