
Stainless Steel Nylon Insert Hex Lock Nuts
Lock Nut with a Nylon Insert in Corrosion Resistant 304 Stainless Steel
- Hexagonal shape Nylon Lock Nut
- Nylon material creates pressure against the fastener
- Forces the bottom threads of the fastener against the top threads of the bolt
- Creates a better hold
- Locks the nut into place so it will not vibrate loose
- Retain locking ability up to 250 °F (121 °C)
- Also referred to as Nylon Lock Nuts, Nyloc Nuts, Polymer-Insert Lock Nuts, or Elastic Stop Nuts
To prevent or stop galling (also known as seizing or locking-up) on stainless steel fasteners, we recommend using an anti-seize thread lubricant from our line of
MRO Solutions
Stainless Steel fasteners rubbing against each other (during installation) may cause a reaction known as Galling. The chance of galling increases significantly when a nylon insert is added to the nut. To limit the extra friction created by the nylon insert, Waxed Nylon Insert Lock Nuts are also available.
*Even when using Waxed Nylon Insert Lock Nuts, we still recommend using an MRO Anti-Seize Solution to further deter thread galling during any stainless steel fastener installation.
Nylon Insert
Lock Nut Size |
Width Across Flats | Height / Thickness |
#4 | 0.251" | 0.153" |
#6 | 0.313" | 0.188" |
#8 | 0.345" | 0.239" |
#10 | 0.376" | 0.249" |
#12 | 0.439" | 0.328" |
1/4" | 0.439" | 0.328" |
5/16" | 0.502" | 0.359" |
3/8" | 0.563" | 0.468" |
7/16" | 0.627" | 0.468" |
1/2" | 0.752" |
0.609"
|
9/16"
|
0.877" | 0.656" |
5/8" | 0.940" | 0.765" |
3/4" | 1.064" | 0.890" |
7/8" | 1.252" | 0.999" |
1" | 1.44" | 1.078" |
See Product Specifications