If I have a torque wrench that works for a 5/16" hex head, but now I have a
hex head that is 3/8" in size, is it possible to use the same torque wrench
with some sort of an adapter?
I went to the big box store looking for an adapter but I could not find one.
I have a set of sockets that includes a 3/8" head but that would not help me
in using that T handle torque wrench that would release at 60#-in.
I seems I need a piece that on one end it is a 5/16" hex head and the other
side is a square head to insert into my 3/8" socket. Is there such a thing?
Thanks in advance,
I'm not sure what you mean by 5/16" hex head... all my torque wrenches
are either 1/4, 3/8 or 1/2" square drive... but if I had a clear idea
of what the drive of your torque wrench looked like I could probably
kludge an adapter
replace "roosters" with "cox" to reply.
JCWhitney.com has a set of three adapters that do everything you could
need. They don't include 3/8" drive to 1/4" socket because every 3/8'
set has one, but they include the opposite of that and both directions
beween 3/8 and 1/2
Maybe the set was on sale when I bought it but it was about 2 dollars.
It's obviously worth a lot more than that if you don't have the
adpater you need.
I would think Sears and even HD , and certainly Snap-on, if you can
find one of their trucks would all have these also, but at a higher
To be explicit, it's likely your torque wrench is 1/2 inch drive, and
you can get a 5/16" socket in 1/2, 3/8, or 1/4 inch drive, and
probably 3/4" drive too, so you can buy a 5/16" socket that will fit
your torque wrench, but maybe you'll also need a 1/2" extension
between the wrench and the socket. The simplest thing to do is buy a
set of 1/2" drive, with ratchet, crossover, speeddrive, universal, and
a set of 15 or 20 sockets. Short of that, just buy an adapter
instead of one socket. Unless you think 3/8" is too weak for
whatever you have to turn, but I dont' think that is the issue here.
If HD didn't have a 1/2" drive 5/16" socket... well it probably did
and sears certainly woudl, so I think you're looking for something
else no one makes. Because people use adapters that work with any
However I have some couplings now that has A 3/8" hex head and it will not
fit. I already have a full set of socket 1/4" drive and 1/2" drive. I can
tighen these with a ratchet. However, I feel better if I can tighten them
with the standard torque wrench to the preset specification. So unless I
can find a "bit" that one side of it is a 5/16" hex that will go into the
torque wrench and the other side is a 1/4" square or 1/2" square which will
allow me to attach the 3/8" socket, I am not sure how else I would be able
tot do it.
Ah, well just take a 5/16" socket and a 3/8" socket of the same drive
size, and a piece of square steel stock the same size to couple the
sockets together. You'll have to hold the whole assembly together with
your hand, as you won't have the little spring loaded balls, but your
only cost will be a short length of square steel.
If you wanted to get real fancy, you could make one - drill a hole in
the end of your square steel stock, but not quite all the way through
(drill bit tip penetrates other side of stock, but doesn't go all the
way through) tap the hole for a set screw with a bottoming tap, drop in
a ball bearing and small spring and loctite in a shallow setscrew.
repeat at other end. But that is likely more trouble than it's worth
for a tool that you will presumably use only a couple times.
Now a proper purpose made adapter for the other way (square drive,
female to female) is included in the middle of a common distributor
wrench, but I'm trying to think of an application for a male to male
adapter and can't think of where I might have ever seen one.
replace "roosters" with "cox" to reply.
OK here is your kluge. Use a 5/16 Allen head socket backwards in your
torque wench, now you have a female 1/4" hole you fill with a short piece of
1/4 square stock. Now use a 3/8" socket and you are in business. You might
want to tape all the little bits together.
About the time I had mastered getting the toothpaste back in the tube, then
A clicker torque wrench in that price class will be wildly inaccurate.
Go to any auto parts store and buy a beam type in that torque range
for a few $$ more and have something you can rely on.
Some years ago I had some dealings with a quality control engineer
responsible for certification and calibration of torque wrenches for
his company. At that time he stated flatly that only SnapOn was
approved for click type wrenches. For the beam types there was almost
open approval and no recalibration was needed as they couldn't change
without someone grinding away part of the bending beam. That was nice
to know as the 'Torque to Yield' con rod bolts and head bolts became
common in the auto repair field.
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