Nylock Nut
A hex nut with a nylon insert to lock the nut into place and prevent it from loosening. It does not affect the threads on mating part, making it reusable. Not good in high heat applications.
Other Names: Nylon Insert Lock Nut, Elastic Stop Nut, ESNA® Nut
Dimensions
Subtypes classified by size:
NU - Heavy Hex
NE - Finished Hex
NM - Machine Screw
NTE - Finished Hex - Jam
NTM - Machine Screw - Jam