Nyloc Nuts - Type T - Metric
The term “Nyloc” is an abbreviation for nylon insert self-locking nut.
Nyloc nuts feature a nylon collar in the top portion of the nut that locks the nut in place by squeezing the threads of the bolt as the nut is tightened. This friction that is created prevents the nut from loosening.
Nyloc nuts can be re-used but it is not advisable, as their efficiency is reduced with every application, until eventually they become ineffective. The effective operating temperature of Nyloc nuts varies by manufacturer but as a rule of thumb we would advise extremes of -40C to +120C.
The difference between and Type P and a Type T nyloc nut lies in the physical "depth" of the nut.
Type T nyloc nuts are referred to as thin as shown here. This designation is used for all thread and material types.
