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Aluminium Nyloc Nuts (DIN 985)

Aluminium Nyloc Nuts are economic locking nuts which are ideal within applications where motion or vibration could loosen or undo the nut. They are created to DIN 985 standard.

It can be used to assist sealing the bolt thread against seepage of various liquids; such as oil, water, petrol and paraffin, as well as others.

Nyloc Nuts are torque prevailing nuts which use a plastic or nylon insert which is located toward the top of the nut, reducing its inner diameter which then deforms over the mating thread, capturing the bolt or screw and providing a locking feature which causes resistance or prevailing torque. This keeps the nut locked into position and resistant to vibration.

An Aluminium High Type Nyloc Nut made to DIN 982 standard is also available.

They are re-usable and available from Fastenright in thread sizes from M3 to M16 as standard.

Non-standard sizes are available to order as specials, including custom parts made to drawings.

Nylon Insert Nut Din 985 Dim

Metric Technical Data & Available Sizes
Thread Diameter e min. (mm) h max. (mm) m (mm) S (mm)
M3 6.01 4 2.4 5.5
M4 7.88 5 2.9 7
M5 8.73 5 3.2 8
M6 11.05 6 4 10
M8 14.38 8 6.6 13
M10 18.9 10 6.5 17
M12 21.1 12 8 19
M16 28.75 16 10.5 24
Size not listed? Please make an enquiry – we may be able to provide it.
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