What is retaining nut?

Lock Nuts & Spanner Nuts Bearing lock nuts, sometimes called shaft locknuts or bearing retaining nuts, are utilized to secure bearings onto a shaft and is designed to prevent the loosening of components due to vibration and rotation. Bearing locknuts are typically rounded on the outside with keyed slots.

What does a locking nut do?

A lock nut is a nut that will resist loosening under vibration and torque. There are many types of lock nut but they can be broadly divided into those which use friction to prevent loosening and those that have some form of positive locking device.

When should you use a locking nut?

Locking nuts should be used when the screw joint consists of one or more soft materials. It is difficult to achieve and to maintain a high level of clamp load because the soft material deforms due to high surface pressure. This plastic deformation continues after the torque value has been applied to the screw.

Can a lock nut be removed?

Lock nuts can be very difficult to remove. A lock nut will not loosen, even under intense vibrations. They are different on each side, making them very difficult to get off. There may come a time when you need your lock nut removed; this task could require some patience.

How do Flexloc nuts work?

Flexloc nuts spin freely until the mating threads enter the top locking area. As the nut is wrenched into position, the slotted section expands and locks the nut. Full thread engagement occurs when 1 1/2 threads of a standard bolt extend beyond the top of the nut.

What is a Stover nut?

Stayloc nuts, or often referred to as Stover nuts, are self-locking. They are prevailing torque, type of hexagon lock nuts. Stover nuts are easy to install as they’re simply screwed on to a thread. Not only that, but they are also available with Flange for secure fastening and are very cost effective.

Can you reuse a lock nut?

Are Lock Nuts Able to be Reused? They are able to be reused, but only if the prevailing torque meets certain specifications. Lock Nuts with a Nylon Insert are perhaps the most reliable lock nut, as it is only limited by the temperature of the application it has been used in.

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).

What are the disadvantages of a lock nut?

The disadvantage of all types of locknuts is they may try to trick me into thinking they (the locknuts) are sufficient, and proper torque is not THE pre-requisite for a successful dynamically loaded structural joint.

What side does a nut go on?

The metal thread goes on first. If you’re talking about a nut with a built in fluid seal, due to its design, a Seal Nut will need to go on with the rubber element on the inside.