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Mudball

Active member

Equipment
L2501 HST 4WD
Aug 3, 2015
526
25
28
TN
I hope this conversion chart might be something that will help someone like it did for me.

http://www.engineeringtoolbox.com/wrenches-inches-metric-us-conversion-comparison-d_1607.html

http://www.vaughns-1-pagers.com/science/wrench-conversion.htm


Im sorry that I didnt do more research but it seems this chart I linked to below is inaccurate. It worked for what I needed but still its not as accurate as the other two charts listed above.
Again sorry for any inconvenience.
http://extension.missouri.edu/webster/documents/Ag-edge/Standard-MetricWrenchChart.pdf

Do your own search if you like and find the conversion chart that best suits you.
Type in search, standard metric wrench conversion
Thanks
 
Last edited:

skeets

Well-known member

Equipment
BX 2360 /B2601
Oct 2, 2009
14,551
3,300
113
SW Pa
Took me an hour to figure out how to print it, but I did and its going in the lid of the book chest,, Thanks
 

lugbolt

Well-known member

Equipment
ZG127S-54
Oct 15, 2015
5,205
1,889
113
Mid, South, USA
There are errors in the conversions, and omissions.

3/8 and 10mm are not interchangeable. Not at all.

And 27mm is omitted, which is a pretty common size among Kubota equipment. 17mm is also omitted; also VERY common size in most Japanese equipment.

I can tell you which wrenches interchange between SAE and metric systems, at least up to 30mm. This learned from experience and not from any charts. 3/8 and 10 are not interchangeable. 12mm and 15mm don't interchange with any SAE wrenches; neither does 18mm. Those are fairly common sizes. If one was buying a set of wrenches and/or sockets, USUALLY you can just get 1/4, 8mm, 9mm, 3/8, 10mm, 7/16, 13mm, 9/16, 15mm, 5/8, 17mm, 18mm, 3/4, 21mm, 22mm, 24mm, 1", 27mm, 1 1/8", and 30mm. Also keep in mind that some of the "interchangeable" sizes are looser or tighter than what they're supposed to be, like 9/16 and 14mm...the 14 is a little tighter fitting than a 9/16 is on a 9/16 hex bolt. This can come in handy if you have one that's nearly rounded over-sometimes a metric might fit a little tighter and allow you to bust them loose without rounding any further.

I have a Craftsman set at home and many of the wrenches fit tighter than my Matco wrenches I have at work. Thus, a Craftsman 14 won't fit on a 9/16" head, but my Matco stuff will interchange. Weird.

Most newer Kubota lawn and garden equipment uses 30mm socket. It doesn't interchange all that well with a 1 3/16 but as long as both are 6 point, either will work in a pinch.

Just some of my random thoughts on that subject, FWIW.
 

Mudball

Active member

Equipment
L2501 HST 4WD
Aug 3, 2015
526
25
28
TN
Took me an hour to figure out how to print it, but I did and its going in the lid of the book chest,, Thanks
I hope that works out good for you.

There are errors in the conversions, and omissions.

3/8 and 10mm are not interchangeable. Not at all.

And 27mm is omitted, which is a pretty common size among Kubota equipment. 17mm is also omitted; also VERY common size in most Japanese equipment.

I can tell you which wrenches interchange between SAE and metric systems, at least up to 30mm. This learned from experience and not from any charts. 3/8 and 10 are not interchangeable. 12mm and 15mm don't interchange with any SAE wrenches; neither does 18mm. Those are fairly common sizes. If one was buying a set of wrenches and/or sockets, USUALLY you can just get 1/4, 8mm, 9mm, 3/8, 10mm, 7/16, 13mm, 9/16, 15mm, 5/8, 17mm, 18mm, 3/4, 21mm, 22mm, 24mm, 1", 27mm, 1 1/8", and 30mm. Also keep in mind that some of the "interchangeable" sizes are looser or tighter than what they're supposed to be, like 9/16 and 14mm...the 14 is a little tighter fitting than a 9/16 is on a 9/16 hex bolt. This can come in handy if you have one that's nearly rounded over-sometimes a metric might fit a little tighter and allow you to bust them loose without rounding any further.

I have a Craftsman set at home and many of the wrenches fit tighter than my Matco wrenches I have at work. Thus, a Craftsman 14 won't fit on a 9/16" head, but my Matco stuff will interchange. Weird.

Most newer Kubota lawn and garden equipment uses 30mm socket. It doesn't interchange all that well with a 1 3/16 but as long as both are 6 point, either will work in a pinch.

Just some of my random thoughts on that subject, FWIW.
Thanks for your time and corrections.
I might need to see if I can find a different or maybe better and more accurate conversion chart.
 

Mudball

Active member

Equipment
L2501 HST 4WD
Aug 3, 2015
526
25
28
TN
Last edited:

100 td

Active member

Equipment
B21TLB (B21, TL421 & BT751) Toyota SDK4 T116 Bobcat
Aug 29, 2015
1,776
9
38
ɹǝpunuʍop
If one was buying a set of wrenches and/or sockets, USUALLY you can just get 1/4, 8mm, 9mm, 3/8, 10mm, 7/16, 13mm, 9/16, 15mm, 5/8, 17mm, 18mm, 3/4, 21mm, 22mm, 24mm, 1", 27mm, 1 1/8", and 30mm.
Missing is the all important 12mm, and I suppose for you imperial guys, 1/2".
There are a few different metric standards, thread size to head size, Japanese is different to German, so when I go down to the German Aldi store when they have a special on ratchet ring/open enders, I find that they don't have the sizes I want for Japanese bolts.
So the set they have is 8,10,13,15 & 17, where I want 8, 10, 12, 14,& 17. The most used spanners in Jap range are 10, 12, 14, 17.
https://www.boltdepot.com/fastener-information/bolts/metric-bolt-head-size.aspx
For Japanese bolts, grab yourself some correct size metric spanners and sockets, they'll never go astray.
 
Last edited:

sagor

Active member

Equipment
BX25, BX2750D, BX2760A, 5' back blade
Jan 9, 2017
285
58
28
Sudbury, ON, Canada
Missing is the all important 12mm, and I suppose for you imperial guys, 1/2".
There are a few different metric standards, thread size to head size, Japanese is different to German, so when I go down to the German Aldi store when they have a special on ratchet ring/open enders, I find that they don't have the sizes I want for Japanese bolts.
So the set they have is 8,10,13,15 & 17, where I want 8, 10, 12, 14,& 17. The most used spanners in Jap range are 10, 12, 14, 17.
https://www.boltdepot.com/fastener-information/bolts/metric-bolt-head-size.aspx
For Japanese bolts, grab yourself some correct size metric spanners and sockets, they'll never go astray.
I agree, that for the price of a good metric socket and wrench set, it does not make sense to do any "conversion". Just buy the right tools for the right job, problem solved.
 

skeets

Well-known member

Equipment
BX 2360 /B2601
Oct 2, 2009
14,551
3,300
113
SW Pa
No worries, the new one will do well, and truth be told when you have a box full of SAE stuff,, spending money on more METRIC stuff that aint used all that often, is well a bit over the top, but if you need something the chart will help