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Nyloc (Nylon Insert) Nuts

A Nyloc (Nylon Insert) 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 (Nylon Insert) 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.

Nylon-Insert-Nut-Din-985-Dim

Technical Data & Available Sizes
Thread Diameter Type T – DIN 985 Type P – DIN 982
h (mm) m (mm) s (mm) h (mm) m (mm) s (mm)
M1.2 1.5 1.0 2.2
M1.4 1.5 1.0 2.2
M1.6 1.65 1.4 2.2
M2 3.0 1.8 4.0
M2.5 3.4 2.25 5.0
M3 3.6 2.4 5.5
M3.5 5.0 3.2 6.0
M4 4.0 2.5 7.0
M5 5.0 3.5 8.0 6.3 4.0 8.0
M6 6.0 4.5 10.0 8.0 5.0 10.0
M7 7.5 5.5 11.0 8.5 5.5 11.0
M8 8.0 6.0 13.0 9.5 6.5 13.0
M10 10.0 7.5 17.0 11.5 8.0 17.0
M12 12.0 8.5 19.0 14.0 10.0 19.0
M14 14.0 11.5 22.0 16.0 11.0 22.0
M16 16.0 12.5 24.0 18.0 13.0 24.0
M18 18.0 14.0 27.0 20.0 15.0 27.0
M20 20.0 15.0 30.0 22.0 16.0 30.0
M22 22.0 16.0 32.0 25.0 18.0 32.0
M24 24.0 18.0 36.0 28.0 19.0 36.0
M27 27.0 21.0 41.0 30.5 23.0 41.0
M30 30.0 23.0 46.0 35.0 27.0 46.0
M33 33.0 25.0 50.0
M36 36.0 27.0 55.0
M39 39.0 30.0 60.0
M42 42.0 33.0 65.0
M45 45.0 35.0 70.0
M48 48.0 38.0 75.0
M52 52.0 42.0 80.0
M56 56.0 45.0 85.0
Size not listed? Please enquire – we may be able to provide it.

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