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Author Topic: Depth on joints?  (Read 910 times)

Offline lt99ls1

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Depth on joints?
« on: March 30, 2015, 11:49:53 AM »
How far in fractions of inch/inchs or number of threads do you think a heim joint should be screwed in to be safe and durable?
Larry

05 LJ
20 BabyMax

Offline DOUG

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Re: Depth on joints?
« Reply #1 on: March 30, 2015, 11:55:59 AM »
Half of what is available?

Offline lt99ls1

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Re: Depth on joints?
« Reply #2 on: March 30, 2015, 12:03:03 PM »
Does that include the jam nut?
If the available amount is 1/2 inch then a 1/4 inch of the thread is enough?
If the available amount is 2 inches then a 1 inch of the thread is enough or is that over kill?
« Last Edit: March 30, 2015, 12:06:53 PM by lt99ls1 »
Larry

05 LJ
20 BabyMax

Offline DOUG

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Re: Depth on joints?
« Reply #3 on: March 30, 2015, 12:22:54 PM »
I'm speaking of a properly made joint and threaded stud.  The length should always be a factor of the diameter, so that half is always strong enough.  A 1/2" total should be small load and fine threads. 

More info please?

http://file.lasersaur.com/docs-thirdparty/Fastener_Design_Manual.pdf

http://www.portlandbolt.com/technical/faqs/recommendation-on-thread-engagement/

Offline DOUG

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Re: Depth on joints?
« Reply #4 on: March 30, 2015, 12:24:03 PM »
If you followed some of that link guidelines, it would be the length of the nut plus 2 threads on the inside.

Offline 94xjsport94

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Re: Depth on joints?
« Reply #5 on: March 30, 2015, 12:25:34 PM »
I've always heard 1" threaded in to a weld in bung before the jam nut. Now with my lowers I pushed the front a little bit more forward and I know I don't have 1" in the bung. It'll work until I can build new lowers later on.

1/2 the length of the threaded stud should be a good rule of thumb. What joint only has 1/2" of threads?!
Will

94 seXj

Offline lt99ls1

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Re: Depth on joints?
« Reply #6 on: March 30, 2015, 02:30:52 PM »
Larry

05 LJ
20 BabyMax

Offline 94xjsport94

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Re: Depth on joints?
« Reply #7 on: March 30, 2015, 02:34:12 PM »
I'd run it.
Will

94 seXj

Offline DOUG

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Re: Depth on joints?
« Reply #8 on: March 30, 2015, 03:44:35 PM »
On that size, me too.  Loctite on the jam nut?

 



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