Milwaukee Tool launched a new nut runner accessory, 48-32-2391, which works with the 9/16″ nuts used on 3/8″ threaded rod.
It’s designed for use with impact drivers that have a standard 1/4″ hex chuck.
Milwaukee says their new accessory delivers the fastest nut running, and has up to 100 lbs of lifting capacity.
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As with other Milwaukee Shockwave impact accessories, the nut runner has a “ShockZone” for absorbing peak torque to help prevent breakage.
The nut runner is designed for assembly, installation, and adjustment tasks, and has a split front for easy access to installed hex nuts.
3/8″ threaded rod will be found in a lot of strut racks, trapeze systems, and other types of hanger systems.
Price: $50
ETA: August 2025
Other Options
Dewalt also has a nut runner attachment for impact drivers – it’s larger and priced at over $120 at Amazon, but can work with smaller and larger sized nuts.
There are also friction rollers, such as the NutBoss which is $22 at Amazon.
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Rog
Silly question, but: Why is it so large? Does it need to be so?
Stuart
I’m guessing gears, strength, and usability.
SamR
I would say, smaller than that, and people will start to lose it!
CA
That’s nuts!
CA
Seriously though I’m sure there are some guys in the commercial trades that will really like it.
Nathan
The DeWalt holds itself on your implement where this doesn’t. I don’t see mention of a reset but I bet there is. And the nut head of the DeWalt looks to be maneuverable to the drill and the head thinner. But that’s just pictures so curious on a side by side. Because of how the DeWalt holds itself I like that better I think. The 100 lbs lift seems nice to have
fred
Midwest Tool (USA) – recently introduced a manual approach to this task – with what they call GRVTY Wrenches in 3/8 and 1/2 hex sizes:
https://www.amazon.com/MIDWEST-GRVTY-WRENCH-2-Piece-Wrench-MWT-GW2/dp/B0D6X5P2G3
Some years ago, we had tried one of the “friction” rollers (ours from Lobtex) – and the guys found it worked – but was frustrating to use. We only bought the one to try – and none wanted us to buy more:
https://www.amazon.com.au/Lobtex-NTLM/dp/B00762AMLM
Pat
Is it wrong I think that’s the coolest fidget spinner ever?
Rachel Wilkerson
I got one from dura dyne and we call it the fidget spinner. It does 9/16 and 7/16s. It doesn’t seem to be much faster though but it does make a nice pocket wrench.
Bonnie
That might be the most intense video I’ve seen for a wrench. Kinda love it.
LGonToolGuy'd
Here solely to say I love all things lobtex.
tjb
I’d love the Midwest ones – but not for $75! Yikes!
eddiesky
Does it do one rotation an stop at open when you let go the trigger? How to remove? I mean, I get your might be hanging uni-strut and put on the rod, but where its done, you slide down and have to tweak it to get… oh, you can slide all the way off… Never used one, just curious. More for trade I guess.
Jeffrey
The Big 3 require 1/2” threaded rod.
I just use a drum sander, without sandpaper, to run nuts on threaded rod.
Nate
The Bell System is all 5/8″ rod. We did it by hand because we were paid by the hour, and I don’t think these had been invented yet, but that drum trick is brilliant and I’ll have to file that away.
EBT
How does this work? I mean, its geared but to remove, just slide off?
(Stuart, am I banned? I can’t update my account email so…)
Stuart
No; you broke a specific rule one time too many, and so comments with your email were set to go to the moderation queue first. Given the email address you use, there was no way for me to caution you privately first. And no, you’ve been toeing the line with politics, but that wasn’t it. I’ll reverse the change, but we can’t talk about it here. Email/DM/message me and I’ll explain.
Bob
it can be a learning experience for all! Spill the tea
Matt_T
The Dewalt looks more user friendly. Pushing on the impact normally is likely better. And it should be easy to get the Dewalt started on the rod with one hand. The Milwaukee will likely take two hands, or major forearm twisting, to get lined up and started.
The price difference is a non issue in the environments these things are used. And ROI will be measured in hours with either tool if they work as advertised.
I plugged the 100# lift into a clamping force calculator, and also used a bolt tension table as a cross check. Got some very low torque numbers. 7.5 in-lb for the Milwaukee and 100 in-lb for the Dewalt. Not sure that’ll be enough to power past dings and such??
MM
Usually lift capacities have a very large factor of safety built in, usually a factor of several to one. I’m sure this is capable of much more than 7.5 in-lb, they’re just being conservative with respect to the lift capacity out of an abundance of caution.
ElectroAtletico
The Rack-a-teer “nut zipper” is simpler and does it just as fast. https://rack-a-tiers.com/product/nut-zipper/
DC
Wow a cool tool for all threads.
Devin
Looks just like the thread daddy that’s been out for awhile
Dave
I finally came across a tool I REALLY won’t ever use which is pretty rare!
Stuart
What about https://toolguyd.com/milwaukee-mx-fuel-electrofusion-processor/ ?
Rob Ziemba
I like Milwaukee keeping it small. All DeWalt’s impact add-ons have clamps that hook up to the driver base and make it bulkier and more expensive.
Peter D Fox
Really cool for the new build electricians plumbers and HVAC tech that would use this weekly if not daily hanging equipment and pipe. Fancy overkill for the majority of guys.
Alternatively you could do what most do and wrap 5-10 layers if electrical tape on the outside sleeve of the drill chuck and just use it as a tire to spin the nut along until it is close and do final adjustment with a wrench or pliers.