300 series nylon lock nuts300 series stainless is also known as 18-8 stainless steel because it typically consists of 18% chromium and 8% nickel. 300 series stainless steel has excellent corrosion resistance and is generally non-magnetic. It is an excellent material to use for general outdoor purposes. It can withstand standard environmental conditions without corroding. It is a far superior material to use compared to steel products when it is exposed to the elements. The 300 series stainless properties is as follows:


300 Series Stainless Steel Properties
Stainless Steel
CrNiMax C MaxMn Max PMax S  Mo Max SiQuote
302 17-19% 8-10% 0.15% 2% 0.045% 0.03%   1% RFQ
303 17-19% 8-10% 0.15% 2% 0.02% 0.15% min 0.6% max 1% RFQ
304 18-20% 8-10.5% 0.08% 2% 0.45% 0.03%   1% RFQ

What are nylon lock nuts?

Nylon insert lock nuts (also known as nylocks) are a threaded hex nuts with nylon insert collars that resist turning. The plastic nylon is placed at the end of the nut. When tightened, the nylon portion locks into the threads of the screws, but does not get cut, allowing the nylon nut to be reused.

We carry nylon lock nuts in both standard and metric sizes. We also carry them in the NE, NM, NTM, NTE, NTU, and NU pattern. Whether you need a standard or custom size, KD Fasteners has a solution for you.