Ultra low profile 1/4 10mm socket options

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Apr 11, 2023
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So I've recently run into a problem that I can't find a tool for that works.

I'm working on my uncle's Suzuki motorcycle and I want to check the valve clearance. The inspection cover has a recessed 10mm nut/stud under the frame.

I think I could get to these nuts if I took off the throttle body but valve clearance checks are part of regular maintenance and it seems stupid to have to do this.

The clearance is only about 1 inch between the frame and the recessed nut. I have a Koken Zeal ratchet and 10mm socket that just barely does not fit. It looks like I'm going to need a low profile socket that works with a wrench.

I see that Snap-on sells low profile 1/4 sockets that work with an 11mm wrench. I can't find the sockets individually on EBay and I'm loathe to pay the shipping on 1 socket from Snap-on.

Does anyone know if any company makes a similar low profile set?
 
Would something like this be deep enough? It doesn't ratchet, but its low profile?

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Nah, AFAIK the Nano stuff is all considered impact rated and tends to be too much for delicate work when every thousandth of clearance counts.

Try this for a whopping $16 at any O'Reilly. These are my secret weapon for tight spaces

Seen here Nano 10mm next to Powertorque 10mm. To be fair, the Nano is 3/8" dr while the PT is 1/4". No, they're not flipped; the Nano has to be larger at the base to accommodate the larger drive size.

OAL of Nano in 3/8" dr: .897"
OAL of PT in 1/4" dr: .667"

Either will accept a wrench instead of a square anvil, but the PT takes a much smaller wrench as seen

I don't own Nano stuff in 1/4" dr. I don't even know if they make it.
20240811_093246.jpg
 
If anyone has Nano in 1/4" dr please get OAL of the 10mm

Then we need to compare major OD and hex size of flats. I can measure the PT for these two dims if we have Astro dims to compare.
 
There are also these:

 
Thanks everyone for the responses and especially thanks to @AutoMechanic and @D60. You guys knew exactly what I needed. I was in town and grabbed it at O'Reillys. I think this is going to work perfectly.

what bike is this? I'd like to look it up and see what you're dealing with.


This is a 2005 Suzuki Boulevard VZ800. The outer valve inspection cover bolts have an 8mm head and the inner cover studs have a 10mm nut holding down the cover. I'll post some pics in a bit of the clearances. I've had this one on hold for a few weeks until I could find the right tool.

I had browsed some of the Suzuki forums and everyone just advised to take off the throttle body, but screw that.
 
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