Which way does a nylock nut go on

Nylon lock nuts are used across a wide variety of industries, including in appliances, computers, furniture, medical equipment, vehicles, sheet metal, and aircraft. Heavier nylon insert lock nuts are used in buildings, on bridges, and in railroad equipment.

Because these types of locknuts are nylon, they are not suitable for use in applications that require elevated temperatures or that come into contact with certain types of chemicals. The locknut does provide a seal against gas and moisture.

The nylon insert locknut comes with an insert that fits the threads of the screw it is placed on and causes a gripping action due to the friction it creates. This, in turn, lessens the chance that the nut will become loose because of vibrations.

Although the name nylon insert locknut creates the impression that they actually lock, they do not. Depending on the amount of vibration in the application that the locknut is used for, the parts may become loose. However, they will not come apart because of the friction that results between the locknut and the threads.

The torque that is needed is just enough to run the nut down the threads and firmly seat it. The thread should protrude over the rolled collar and the end of the screw should protrude above the nut body once it is seated. Nylon insert locknuts can be adjusted or removed a limited number of times after the first use, however, the friction factor decreases after each use.

An expert in the fastener industry should be consulted to determine whether the use of nylon insert locknuts is suitable for your particular application. Please contact [email protected] if you have any questions about nylon insert locknuts and their uses.

Nyloc nuts feature a nylon collar in the top portion of the nut that locks the nut in place by essentially squeezing the threads of the bolt as the nut is tightened. In scientific terms, the friction that is created by the radial compressive force of the nut turning against the thread prevents it from loosening.

The name Nyloc is short for Nylon insert lock nut. They are also sometimes called polymer-insert lock nuts, or elastic stop nuts.

One of the advantages of Nyloc nuts is that unlike lock washers they are unaffected by vibration.

When using a nyloc nut, always inspect the nylon insert first to ensure that it is not damaged.

Nyloc nuts should be threaded onto the bolt or stud and tightened by hand until resistance is felt. Continue tightening through this resistance with a spanner or socket until the nut seats firmly against the surface of the object that you are securing.

Nyloc nuts can be re-used but it is not advisable, as their efficiency is reduced with every application until eventually, they become ineffective. The effective operating temperature of Nyloc nuts varies by manufacturer but as a rule of thumb, we would advise extremes of -40C to +120C.

The thread on this type of nut can often (but not always!) be identified by the colour of the nylon insert, with blue signifying metric and white for imperial threads.

Nylon lock nuts differ from a standard hex nut in that they have a nylon insert secured within the nut. The nylon insert is located in a tapered section located at the back of the 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.

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Step 1

Examine the nylon insert of the nylon lock nut to ensure that the insert is not damaged.

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Step 2

Thread the nylon lock nut onto the bolt or threaded stud and turn the nut clockwise with your hand until it no longer turns. This will be the point that the nylon insert contacts the top thread of the fastener.

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Step 3

Place the socket that matches the nylon lock nut onto the 3/8-inch drive ratchet.

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Step 4

Slide the socket onto the nylon lock nut and turn the handle of the ratchet clockwise to turn the nylon lock nut onto the fastener. You will feel some resistance from the nylon lock nut as you turn it onto the fastener. This is created by the nylon insert and is completely normal.

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Step 5

Continue turning the ratchet handle until the nylon lock nut seats tightly against the surface of the material you are securing with the nut.

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