DIN982 Nylon Insert Hex Lock Nuts

DIN 982 Nylon Insert Hex Lock Nuts 

Metric DIN 982 nylon insert locking nuts are prevailing torque type lock nuts which have a permanent undersized non metallic insert (nylon/polyamide) that produces friction between threads of mated components thereby increasing the resistance to loosening forces. DIN 982 is similar in dimensions to DIN 985 except that the total height of DIN 982 nuts a greater. Nylon insert lock nuts may be re-used a limited number of times because the threads of the mating bolt deform but do not cut into the polymer insert. These nuts are considered one-way lock nuts because they can only be installed one-way—top up. The nylon insert limits the use at elevated temperatures or when exposed to certain chemicals.