M4 M8 M10 Din 982 Tall Nylon Insert Hex Lock Nut Iso 7040 A2 A4

Product Specification

M4 M8 M10 Din 982 Tall Nylon Insert Hex Lock Nut Iso 7040 A2 A4 
Description
Metric DIN 982 nylon insert lock 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. Aspen Fasteners offers one of
the most complete ranges of metric studs and other inch and metric industrial fasteners for immediate delivery from stock.
The following sizes of metric DIN 985 nylon insert lock nuts are available for immediate shipping from stock: Diameters
ranging from M4 to M24 in A2 and marine grade A4 stainless steel as well as brass and steel.

When the nut is screwed onto the thread, the plastic ring is plastically and elastically deformed. The elastic part causes a radially acting, frictional lock that prevents the nut loosening.

The plastic thread lock is only effective when the hex nut is completely on the screw. The length of the screw should be selected so that at least two threads protrude from the nut.

Due to the plastic deformation of the thread lock, this hex nut may only be used once.

The maximum nut height H max. is shown in the table.

M4 as per DIN EN ISO 7040.

Hexagon nut incorporating a nylon insert to help prevent loosening when fitted. This is the higher profile (Type P) variant with more available thread engagement and is typically fitted with a spanner or ratchet with socket. A lower profile, where perhaps space is at a premium is also available under DIN 985 (Type T).

This locking nut relies on a nylon insert to create interference between the mating threads of a bolt or threaded rod. The nylon insert compresses to securely fasten the nut against the bolt, ensuring resistance to vibration and loosening.

Stainless nylon lock nuts are commonly used in damp environments for corrosion resistance, popular across a wide range of industries: automotive, agriculture, food processing, clean energy, etc. For any application involving marine (salt water), use A4 / 316 Stainless Steel material, available in bulk packs and as a special order.

Nylon lock nuts will not damage the threads a bolt or screw. Nylon insert color tone varies.

Nylon nuts are of the most popular methods of fastener locking. Also known as high type nylon lock nut or extra tall prevailing torque lock nut.
 
 Specification
 
 

 
  Popular size
 
din 982 a2
din 982 a4
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