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Welting rivet installation m38a1/ m170
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Willys M Jeeps Forums :: View topic - Lug Nut Stud length...
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Lug Nut Stud length...

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Joined: Jan 27, 2014
Posts: 124
Location: West Palm Beach FL area

PostPosted: Wed Sep 11, 2019 11:55 am    Post subject: Lug Nut Stud length... Reply with quote

I have successfully replaced the first of 5 lug nut studs on my Dana 44 rear hub.

The new right hand thread stud is .050 of an inch shorter in length than the one I am replacing, so not much there. It pressed in smoothly and straight. I took my handy work and put the hub on an M38 wheel to check concentricity and length.

As expected, the stud was just slightly shorter than the existing studs. The threads are just slightly exposed after the lug nut is snugged up.
My question, is this: how did original wheel studs looked after tightening? This stud is about flush with the top of the lug nut. My old aircraft maintenance experience was 2 threads showing on all bolts and studs... Should I be happy with the length or go slightly longer?

Thanks, Jeff
1951 M38 restoration project - Flightline Jeep MC 23923 DoD 6-51
1954 M-100 Trailer USMC Dunbar Kapple s/n M-750759 DoD 1-54
1947 Willys CJ2A - Harvest Green
1954 Ford F-100 Parts chaser - blueprinted Y-Block
Southeast Florida
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Joined: Apr 04, 2005
Posts: 14462
Location: Wisconsin

PostPosted: Wed Sep 11, 2019 1:38 pm    Post subject: Reply with quote

I found the same issue with new studs. I have been looking for a slightly smaller nut.

Keep in mind it is the different angles the lug nut and the wheel's hole meet each other with that captures the nut. I doubt we will drive them fast enough to force a nut loose.
Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

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