1/4"-20 Grade 18-8 NE Stainless Steel Nylon Insert Lock Nut


Product Attributes

Wrench Size------------7/16"
Grade------------18-8
Thread Size------------20
Thickness------------0.328"
Diameter-Thread Size------------1/4"-20
Finish------------Plain
Diameter------------1/4"
Material------------Stainless Steel
Thread------------Coarse
Series------------NE
Type------------Nylon Insert Lock Nut
System of Measurement------------Imperial (Inch)
UOM------------Pkg of 50

A nyloc nut, also referred to as a nylon-insert lock nut, polymer-insert lock nut, or elastic stop nut, is a kind of locknut.
It is a nut with a nylon collar insert that resists turning.
The plastic insert is placed at the end of the nut, and its inner diameter (ID) is slightly smaller than the major diameter of the screw.
The insert deforms elastically over the threads of the screw, but threads are not cut into the nylon.
The nylon insert locks the nut by friction against the screw under the applied radial compressive force.
Nyloc nuts retain their locking ability up to 250 °F (121 °C).
Authorities disagree on whether nyloc nuts should be reused.
For example, the nylon insert is not damaged by installation and therefore they can be reused many times ,and a Federal Aviation Administration Advisory Circular allows nuts to be reused if the prevailing torque is within specification.
However, an Air Force Technical Order requires replacement of self-locking nuts in critical areas.

FEATURES

• Type：Nylon Insert Lock Nut
• Diameter-Thread Size：1/4"-20
• Grade: 18-8 Stainless steel A193 B8
• Finish: Plain
• UOM: Pkg of 50

Where do your products come from?
We source inventory through liquidation and wholesale channels, including overstock, closeouts, shelf-pulls, and inspected customer returns from major retailers and distributors.

Why are your prices so much cheaper than retail?
We buy inventory in bulk and price items to move quickly. This reduces overhead and removes typical retail markups.

Are the products authentic?
We focus on legitimate sourcing channels and aim to describe items accurately with clear condition information.

What does “Like New” mean?
Like New items are in excellent condition with little to no signs of use. This can include items that were opened but are still in like-new condition.

Why do some items have different packaging?
Liquidation inventory may include items with opened or replacement packaging. Condition is always shown on the listing.

Do you combine shipping?
Yes—when possible, items may ship together. Shipping is calculated at checkout based on weight, dimensions, and destination.

Do you offer free shipping?
Yes—free shipping applies to orders $50+ (as shown on the site).

How fast do you ship and which carriers do you use?
Shipping options and timelines are shown at checkout. We typically use major carriers such as USPS, UPS, and FedEx depending on package and destination.

What is your return policy?
Please refer to our Returns Policy page for eligibility and timelines.