Nyloc Nuts (Nylon Insert)

A Nyloc Nut is a torque prevailing nut which uses a plastic/nylon insert located towards the top of the nut, reducing its inner diameter, which then deforms over the mating thread. This captures the bolt or screw, providing a locking feature causing resistance or prevailing torque – keeping the nut locked in position and resistant to vibration.

This design feature means that the screw threads do not cause damage to the plastic/nylon section allowing the nut to be re-used – although the locking feature will deteriorate after persistent re-use.

The Nyloc Nut is an economic locking nut and ideal in applications where vibration or motion could loosen or undo the nut.

The nut can also be used to assist sealing the bolt thread against seepage of oil, water, petrol, paraffin and other liquids. They can be used in environments with relatively high temperatures where they can retain their locking ability up to 121°C.

Available in a range of thread sizes, materials and finishes, with specials available to order.

DIN 985 Type T Nyloc Nuts are available in Grade 8, 10 & 12:

Metric Thread – M2 – M56
BA Thread 6BA – 2B
BSW Thread 3/16″ – 2 ½”
BSF ¼” – 3″
UNC 4-10 – 1 ½”
UNF 10-32 – 1 ½”

DIN 982 Type P Nyloc (Nylon Insert) Nuts are available in Grade 8, 10 & 12:

Metric Thread M5 – M30
BA Thread 6BA – 2B
BSW Thread 3/16″ – 2 ½”
BSF ¼” – 2 3/8″
UNC 6-32 – 1″
UNF 10-32 – 1 ½”

Non-standard sizes, materials and finishes are available to order as specials, including small volume manufacture, modifications and custom parts made to drawings.