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Prevailing torque external fasteners

Prevailing torque external fasteners

Prevailing torque external fasteners

(OP)
Can anybody provide me an input on prevailing torque, external fastener for different nut applications.

Thanx for ur input.
baskar

RE: Prevailing torque external fasteners

Standard machine screw with polymer patch or thread forming screw (e.g. Taptite).  The latter is preferred over the former.

Regards,

Cory

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RE: Prevailing torque external fasteners

You will likely have more options at less expense if you consider having the prevailing torque element within the nuts rather than the bolts.

 

RE: Prevailing torque external fasteners

Try locknuts per MS21044 and MS21048.  These have nylon locking elements.

Tunalover

RE: Prevailing torque external fasteners

My mistake:  I said MS21048 when I should have said MS21043.

Tunalover

RE: Prevailing torque external fasteners

Kenneth-
Thanks for the correction.  I have the right spec number at work but our IT Dept blocks people from posting from there.  Imagine that:  employees participating in public forums share and give knowledge with his peers!  We'll have none of that!

Tunalover

RE: Prevailing torque external fasteners

baskargk-
The spec for the reduced height locknut with plastic locking element is MS21083.  Sorry for the confustion.

Tunalover

RE: Prevailing torque external fasteners

External thread prevaining torque fasteners are covered by:

MIL-DTL-18240
IFI 124
NAS 1283
MS 15981

See http://www.longlok.com/

The downloadable handbook is quite informative.  MIL-DTF-18240 is also available there for download.

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