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prevailing torque locknut vs serrated flange nut

Joined
Apr 25, 2014
Messages
24
Location
PA
Hi guys,

i need to reassemble my gas tank skid on my tj and the nuts that hold the skid to the tj are 5/16-18 serrated flange nuts.

i've been trying to find serrated flange nuts with also a deformed thread but am coming up blank. what are you opinion on the two different type of fasteners?
 
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king nero

Well-known member
Joined
Dec 27, 2010
Messages
1,469
Location
Belgium
Both aren't very efficient.

Nord-Lock has some (two-part) washers that really do something, but they're not exactly cheap. I'd use LocTite.
 
OP
E
Joined
Apr 25, 2014
Messages
24
Location
PA
neat, looking up those nord-locks, but can't verify the part numbers between their regular washers and their new "X" series. MSC Direct was no help distinguishing which are which on their end.
 
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OP
E
Joined
Apr 25, 2014
Messages
24
Location
PA
i think i'm just going to try to get my hands on some nice grade 8 (gold finish) serrated flange nuts and "deform" the top thread myself

...when you need something done
 

lotsoftools

Well-known member
Joined
Oct 22, 2011
Messages
1,316
Location
Inland Empire
You're looking for a top lock flange nut. They do exist, but I've only seen them in clear zinc. I'm sure there is a mfr that makes them in yellow zinc.
 

csp

Well-known member
Joined
Mar 23, 2010
Messages
5,719
Location
Franktown, CO
Given the application I don't see the need for both serrated and prevailing torque.

I have to ask why?
 
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