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What can be used instead of a lock washer?

An alternative to using a lock or vibration-resistant washer is to use thread-locker or a lock nut. Lock nuts may either use friction, such as a nyloc, distorted thread or jam nut, or they may use positive locking, such as a castellated or slotted nut.

What size is #10 lock washer?

Split Lock Helical Spring Washer Size Dimension Table Chart ANSI/ASME B18. 21.1

Nominal Washer Size Inside Diameter, A
No. 8 0.164 0.174 0.167
No. 10 0.190 0.200 0.193
No. 12 0.216 0.227 0.220
1⁄4 0.250 0.260 0.252

Do you need a washer with a lock nut?

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.

What is the name of tooth type lock washer?

External use lock washers (also called star washers) have teeth made to bite into the bearing surface.

What is a crush washer?

They’re commonly found any time a threaded fastener has to seal in a liquid; the most common example is the crush washer under the oil drain plug of most cars. Tighten the plug, the soft copper washer deforms to fill any gaps, making a liquid-tight seal.

Are spring washers and lock washers the same?

Washer types. Spring washers, which have axial flexibility and are used to prevent fastening or loosening due to vibrations. Locking washers, which prevent fastening or loosening by preventing unscrewing rotation of the fastening device; locking washers are usually also spring washers.

How do you size a lock washer?


Size Inside Diameter Outside Diameter
3/4 .766 1.265
7/8 .894 1.459
1 1.024 1.656
1-1/8 1.153 1.847

Does Double nut prevent loosening?

If the thick nut is overtightened, there is the risk of thread stripping or the tensile fracture of the bolt between the two nuts. The reason why the two nut system is effective in resisting self loosening is due to the way the threads are jammed together (hence the term jam nut being frequently used for the thin nut).

Can you use a lock washer with a nylon nut?

When you install the nylon lock nut onto a bolt or threaded stud, the nylon insert wraps around the threads and locks the nut in place. This gives a nylon lock nut a distinct advantage over a lock washer when the bolt or threaded stud is subject to vibration, as the nylon lock nut is unaffected by vibration.

What type of lock washer is best?

We found that the most effective anti-vibration solutions are anaerobic adhesives and mechanical washers. Overall, Nordlock washers were extremely effective. They’re as easy to install as any standard washer—and easier to install than the next-best contender, the Loctite 2760 adhesive.

What is a spring lock washer?

Spring steel spring lock washers compress as the fastener is tightened and securely lock bolt or screw heads into place to prevent counterclockwise rotation from vibration. Spring steel construction offers resiliency.