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304 Stainless Steel Metric Lock Nuts
M2 / M2.5 / M3 / M4 / M5 / M6 / M8 / M14
304 Stainless Steel Imperial Lock Nuts
2-56 / 4-40 / 8-32 / 10-24 / 10-32, 1/2, 1/4, 3/8, 5/16
Black Metric Lock Nuts
M2 / M2.5 / M3 / M4 / M5 / M6 / M8 and M2-M8 Assortment Kit
Black Imperial Lock Nuts
4-40, 6-32, 8-32, 10-32, 1/4
Metric Nylock Size Map from M2 to M8
Size Map
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.
How to Use a Nylon Lock Nut
- Examine the nylon insert of the nylon lock nut to ensure that the insert is not damaged.
- 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.
- Place the socket that matches the nylon lock nut on the 3/8 inch drive ratchet.
- 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.
- Continue turning the ratchet handle until the nylon lock nut seats tightly against the surface of the material you are securing with the nut.
- Inspect the nylon insert of the lock nut to ensure that it is intact after installation.
Applications
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.
Anthony
Reviewed in the United States on February 2, 2025
This item is very useful to help from nuts regularly coming loose and falling off will purchase again in the future,good product Ty!!
Erika
Reviewed in the United States on February 23, 2024
Amazon always has what I need. I went into HomeDepot but no luck there.
Jerry Rutherford
Reviewed in the United States on November 11, 2024
Did you know that if you are working with acrylic and use Locktite the plastic will disintegrate? Yeah... me either. Totally destroyed the part. So I made another one and THIS TIME I used the nylon lock washers. MUCH better... they have been in a machine that vibrates... have never come loose. Keep a bag on hand!!!
timothy
Reviewed in the United States on August 8, 2023
nice quality
Jessie wilkes
Reviewed in the United States on August 3, 2023
They look real good and they are as they are described
BookWorm
Reviewed in the United States on August 29, 2023
Just the size I needed to repair my saw!
EJ
Reviewed in the United States on February 6, 2023
Bought these for a specific use and I only needed a couple initially but then they started becoming useful in so many situations. Now I'll be getting more sizes
J
Reviewed in the United States on December 18, 2021
Works great. Had a manufacturer for a tv mount send me stripped nuts and these were the only replacements with a stronger grade rating that I could find. Definitely did the job! I have them under some pretty heavy tension and they're holding strong. Definitely recommend.
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