[SML] Thread projection

[Bill Sapsis]

Loren.  I appreciate what you are trying to do but there are no
entertainment Standards that provide the information you want.

Stuart.  5 second rule?  Really?  No such rule.   The ONLY rule you must
follow when crimping swage fittings is to check the crimp with the proper
go/no-go gauge.

Bill S.
http://www.sapsis-rigging.com
Bill at sapsis-rigging.com
+1.215.228.0888   ext 206
+1.267.278.4561 mobile





On 9/18/14, 6:59 PM, "Stuart Wheaton via Stagecraft"
<stagecraft at theatrical.net> wrote:

>On 9/18/2014 3:23 PM, Loren Schreiber via Stagecraft wrote:
>>
>> I believe common practice in theatre is 1.5 to 3 threads, but I'm not
>> sure how much weight that carries with lawyers and such.  What say you
>> all?
>>
>> Loren
>>
>
>With a nylock, you have to pass through it for it to work, with a
>lockwasher, you have to crush it so it grabs and that does not require
>going all the way through the nut.  As far as passing less than all the
>way through, perhaps we need destructive testing to tell us what the
>loss of strength is.  But if the nut cannot work loose it doesn't matter
>how far it passes beyond the nut.  It's probably a lot like the 5 second
>rule for nicopress swages, you want to be sure the nut is on all the
>way, or the tool is fully closed, beyond that it doesn't seem to matter
>exactly how far or how long. The comments about lighting poles seems to
>apply to bolts and nuts in the 1-2 inch diameter range that are bedded
>in concrete and cannot be easily replaced with a proper length, that is
>rarely a theatre situation.
>
>Stuart
>
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