To avoid these ads, REGISTER NOW!

M12 Stubby 3/8” worth it?

Firefighter1406

Well-known member
Joined
Apr 22, 2016
Messages
415
I have the M18 mid torque fuel but it’s a little big for some situations. I have thought about just running a 1/4-3/8” adapter for my regular impact but don’t like how big that gets with adapters. Is the 3/8” m12 stubby worth it?
 
Last edited:
To avoid these ads, REGISTER NOW!

9eight7

Well-known member
Joined
Feb 10, 2021
Messages
92
Location
CA
I'm a home DIY person and only have a M12 stubby for a torque wrench. I use it to remove lug nuts (96 ft. lbs), fasteners, bolts, house work, etc. It didn't work on the steering box of my car which uses a 21mm bolt so I don't know if it would work on body/suspension parts with higher torque.

The lightweight, small size, and short length makes it really easy to use in tight spaces.
 

plinker

Well-known member
Joined
Feb 28, 2007
Messages
4,286
Location
Northern Wi
I use my stubby daily ("pro" use) with a 1/2 high torque and they play very well together.

I do not use it for wheel nuts, No reason to as that is why I have 1/2 impact stuff. Bolts 10mm & under are the prime size for it to deal with, sometimes 12mm can be removed, but not always (excessive loctite, torque & rust are the main factors there). I use 3.0/4.0 amp batteries mainly, sometimes a 2.0 as needed.

Keep in mind the limitations of 3/8 drive and it works great.
 

simon308

Member
Joined
Jan 1, 2016
Messages
5
Location
Atlanta, GA
I have an M12 stubby in 1/2" since my impact sockets are 1/2". Recently did a clutch job in my '07 BMW 328i and used the stubby basically for the entire job. I definitely am a fan.
 

Blind1

Well-known member
Joined
Mar 8, 2018
Messages
355
I have an M12 stubby in 1/2" since my impact sockets are 1/2". Recently did a clutch job in my '07 BMW 328i and used the stubby basically for the entire job. I definitely am a fan.

I’m the same way - the 1/2 stubbies are pretty small as is and I refuse to have to buy ANOTHER set of impact sockets beyond the 1/2 impacts.

3/8” might useful for a pro.... but that’s a hard no for me.
 

M635_Guy

Well-known member
Joined
Dec 5, 2019
Messages
4,333
Location
NC
There's nothing wrong it @ 3/8", but you are losing some power due to the reduced mass of the anvil and sockets. [EDIT - the guys at the Torque Test Channel appear to have determined that difference isn't much - I do value the broader range of larger sockets available on 1/2", including some specialty sockets.]

I have a 1/2" Stubby and 1/2" Mid Gen2. They're a fantastic duo. I spent today dropping the subframe on my Mini, which is unfortunately required to replace lower control arms, and getting started on replacing the struts/links/etc. My Stubby did 80% of the work, but there were a couple spots it wouldn't even fit and required the use of a wobble that robbed enough power that the Stubby couldn't manage. There were also a few big bolts that were just too much. Out came the Mid and we carried on.

The Stubby isn't an "everything" cool, but boy did I appreciate its size and weight today. If the Mid was my only choice, it would have definitely been a harder job. If it had been a 3/8", I'm pretty sure the Mid would have come into play much more often - probably a 60/40 split. But that's also one of the more challenging days, too.

If all you have is 3/8" Impact sockets, then it is what it is. I chose 1/2" with the intent of only having 1 set of impacts, for the extra grump it provides and for the upper size range for things like axle nuts. My Sunex set starts at 9mm, which is fine with me - I'd think twice before smacking anything 8mm or smaller with an impact wrench - even on gentler settings.

If your Mid is 1/2", I'd really recommend a 1/2" Stubby.
 
Last edited:

Fly YX

Well-known member
Joined
Jul 31, 2017
Messages
1,415
Its ok. Mine is used on CRJ and ERJ 175 tires. I have had it now for 3 years or so. It has had thectronics replaced once and the motor replaced
 
OP
F

Firefighter1406

Well-known member
Joined
Apr 22, 2016
Messages
415
I appreciate everyones thoughts so far. I do have all 1/2” impact sockets. However this is going to be used more for clamps, intake boxes, and all the smaller stuff. I have the 3/8” M12 Fuel ratchet but I am just not a fan and can’t get used to using it. To me buying a set of 3/8” impact sockets isn’t a big deal, I mean I can pick up a cheap set at harbor freight for what I need them for but I also don’t think it would hurt especially with the smaller bolts to run chrome sockets, IMO. I thought about the 1/2” one, but in my head I was thinking an adapter down to 3/8” sockets would just make it too big. But I guess if I just used the 1/2” sockets it would be okay. 1/2” impact sockets are just so thick.
 
To avoid these ads, REGISTER NOW!

Skin

Well-known member
Joined
Feb 24, 2010
Messages
11,713
Location
Boston
Its massive overkill for hose clamps and air filter housing fasteners. If thats your real intended use look into the 1/4" version. It still does something like 90 foot pounds on paper but will be far more controllable for what you're talking about. On the downside its slightly longer than the bigger models but not by much.
 
OP
F

Firefighter1406

Well-known member
Joined
Apr 22, 2016
Messages
415
Its massive overkill for hose clamps and air filter housing fasteners. If thats your real intended use look into the 1/4" version. It still does something like 90 foot pounds on paper but will be far more controllable for what you're talking about. On the downside its slightly longer than the bigger models but not by much.

Poor wording on my part. I meant that I am not buying it for lug nuts, more all around. I have the mid torque for lug nuts.
 

plinker

Well-known member
Joined
Feb 28, 2007
Messages
4,286
Location
Northern Wi
I appreciate everyones thoughts so far. I do have all 1/2” impact sockets. However this is going to be used more for clamps, intake boxes, and all the smaller stuff. I have the 3/8” M12 Fuel ratchet but I am just not a fan and can’t get used to using it. To me buying a set of 3/8” impact sockets isn’t a big deal, I mean I can pick up a cheap set at harbor freight for what I need them for but I also don’t think it would hurt especially with the smaller bolts to run chrome sockets, IMO. I thought about the 1/2” one, but in my head I was thinking an adapter down to 3/8” sockets would just make it too big. But I guess if I just used the 1/2” sockets it would be okay. 1/2” impact sockets are just so thick.

I have run into it where 1/2 drive sockets simply wont fit in places 3/8 drive would and this is with "stubby" low profile sockets as well as shallow & deep. I had that issue today actually with a Subaru when removing/installing brake caliper bracket bolts, 17mm socket, 1/2 drive would not fit & clear the strut bolt, 3/8 drive would.

Using the smallest drive size possible (within reason) has it's advantages, especially with tight spaces. Reducer adapters are a pain in the rear most of the time, especially when (not if) they break.


FWIW, Sunex 3/8dr impact sockets are actually pretty thin, very close to chrome 6pt thickness. Not real spendy either.
 

Yarpo

Well-known member
Joined
Feb 11, 2017
Messages
1,355
Location
Minnesota
Its massive overkill for hose clamps and air filter housing fasteners. If thats your real intended use look into the 1/4" version. It still does something like 90 foot pounds on paper but will be far more controllable for what you're talking about. On the downside its slightly longer than the bigger models but not by much.

Indeed.

This is the sole reason I do not like my 3/8" stubby. I know EVERYONE loves them, but mine just doesn't get used much. Everything topside an engine is small, I use my impact driver or ratchet. Everything underneath suspension wise is pretty large, I go for my mid torque. Lug bolts? Won't do them regularly (or much at all here in the Midwest) - I do a lot of interior work, no need for a full blown impact wrench. Brake caliper bracket bolts? Maybe, but probably wont get them. Brake caliper bolts? Could, but still not enough room, need my ratchet or a swivel and possibly an extension on the wrench. Splash shields? Impact driver.

It all depends on what your use case is OP. They're handy and I do use it on occasion, but if somebody took it away I wouldn't care and I wouldn't lose efficiency over a week much if at all. For someone who doesn't have all the tools I have access too, I'd say its probably a good pair with the mid torque I suppose
 

Skin

Well-known member
Joined
Feb 24, 2010
Messages
11,713
Location
Boston
Poor wording on my part. I meant that I am not buying it for lug nuts, more all around. I have the mid torque for lug nuts.

I'll still stick with recommending the 1/4" if we're talking engine compartment, interior fasteners, sensors, line hold downs, oil pans etc... The stubby 3/8 is essentially a mid-torque by 2015 standards. Its overkill for anything under 13mm unless we're talking torque loss through extensions and swivels. It will easily remove lug nuts and bolts on the vast majority of passenger cars and small SUVs.

I own both and the torque range of the 1/4" is more general use. It replaced my Snap-on CT761.

If you go ahead and buy a 3/8 regardless I think you'll like it just due to the form factor but you will notice some overlap with your current mid-torque.
 
OP
F

Firefighter1406

Well-known member
Joined
Apr 22, 2016
Messages
415
Indeed.

This is the sole reason I do not like my 3/8" stubby. I know EVERYONE loves them, but mine just doesn't get used much. Everything topside an engine is small, I use my impact driver or ratchet. Everything underneath suspension wise is pretty large, I go for my mid torque. Lug bolts? Won't do them regularly (or much at all here in the Midwest) - I do a lot of interior work, no need for a full blown impact wrench. Brake caliper bracket bolts? Maybe, but probably wont get them. Brake caliper bolts? Could, but still not enough room, need my ratchet or a swivel and possibly an extension on the wrench. Splash shields? Impact driver.

It all depends on what your use case is OP. They're handy and I do use it on occasion, but if somebody took it away I wouldn't care and I wouldn't lose efficiency over a week much if at all. For someone who doesn't have all the tools I have access too, I'd say its probably a good pair with the mid torque I suppose

I appreciate the insight.


I'll still stick with recommending the 1/4" if we're talking engine compartment, interior fasteners, sensors, line hold downs, oil pans etc... The stubby 3/8 is essentially a mid-torque by 2015 standards. Its overkill for anything under 13mm unless we're talking torque loss through extensions and swivels. It will easily remove lug nuts and bolts on the vast majority of passenger cars and small SUVs.

I own both and the torque range of the 1/4" is more general use. It replaced my Snap-on CT761.

If you go ahead and buy a 3/8 regardless I think you'll like it just due to the form factor but you will notice some overlap with your current mid-torque.

You make some very valid points. I was thinking about the 1/4 stubby but told myself for that price I may as well get the 3/8” ��. Something to consider. Maybe I need to try and use my 3/8 ratchet more.
 
Last edited:

Plastikosmd

Well-known member
Joined
Nov 17, 2016
Messages
1,254
I grabbed one a week or 2 ago

I love it. Size and balance is perfect
It is my go-to for all the 3/8-9/16 (socket size) stuff in my shop/projects.

I just used it today to pull a flywheel using a puller that was 5/8. That was
Close to the limit(flywheel was tight = popped w a strike w deadblow once impact maxed out)

If I need bigger, out comes the high torque.
 

M635_Guy

Well-known member
Joined
Dec 5, 2019
Messages
4,333
Location
NC
I appreciate everyones thoughts so far. I do have all 1/2” impact sockets. However this is going to be used more for clamps, intake boxes, and all the smaller stuff. I have the 3/8” M12 Fuel ratchet but I am just not a fan and can’t get used to using it. To me buying a set of 3/8” impact sockets isn’t a big deal, I mean I can pick up a cheap set at harbor freight for what I need them for but I also don’t think it would hurt especially with the smaller bolts to run chrome sockets, IMO. I thought about the 1/2” one, but in my head I was thinking an adapter down to 3/8” sockets would just make it too big. But I guess if I just used the 1/2” sockets it would be okay. 1/2” impact sockets are just so thick.

For the kind of work you're talking about, I use my M12 3/8" ratchet, but the M12 Surge would be outstanding at that kind of thing and is an all-star around the house too.
 
To avoid these ads, REGISTER NOW!
Top Bottom