sae/metric chart?
- Thread starter indestro
- Start date
george4
Well-known member
OccupantRJ
Well-known member
Not directly relating to wrenches, but a quick rule of thumb for metric is that one millimeter equals approximately .040 inches, and there are approximately 25 millimeters to an inch. A digital caliper is also a good conversion tool. Measure in thousanths, then switch the tool to millimeters without moving the setting, and visa versa.
RJ
RJ
Does anyone know if there is a source for standards regarding the exact dimensions for wrenches and if they are the same for SAE & Metrics. (If a bolt is exactly 14 mm across the flats and a wrench is 14 mm, it would almost be impossible to fit the wrench on the bolt.) Maybe every manufacturer has its own standard.
One could always do the conversions using Google or whatever, but one would need the true exact dimensions to start with.
One could always do the conversions using Google or whatever, but one would need the true exact dimensions to start with.
How about this one? I can customize one for you, if this is not what you want. 
http://cid-533c6ad99f5ed0c5.office.live.com/self.aspx/.Public/SAE^_Metric.pdf
http://cid-533c6ad99f5ed0c5.office.live.com/self.aspx/.Public/SAE^_Metric.pdf
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MotoDave
Well-known member
I've got one I like at work, I'll scan it tomorrow.
Coach James
Well-known member
I got one from Wright in the form of a 4x6(I think) sticker. I put it on the inside lid of one of my top chests.
Coach
Coach
There's a fantastic chart just like you're talking about in the 1986 Bonney I own. Even has drill numbers in it! Very handy. But I don't have a scanner. I'd be willing to snail mail a copy to someone with a scanner if they'll post it for all to see.
Andy Traxel
Member
- Joined
- Nov 19, 2007
- Messages
- 16
I'm not sure to what end you want to put this information, so this may not be an answer for you.
Any edition of Machinery's Handbook from the last 15 years will have current information on ANSI standards for wrench dimensions. And it will have specs for the kind of clearance needed for different size wrenches.
Look at places like Half Price Books for an old copy of Machinery's Handbook. It's a good reference for lots of things mechanical.
Andy
Any edition of Machinery's Handbook from the last 15 years will have current information on ANSI standards for wrench dimensions. And it will have specs for the kind of clearance needed for different size wrenches.
Look at places like Half Price Books for an old copy of Machinery's Handbook. It's a good reference for lots of things mechanical.
Andy
caper
Well-known member
8mm=5/16",haven't compared 9mm and 11/32",3/8 has nothing similar in metric,10mm is bigger than 3/8" but has no sae match,11mm=7/16",13mm just slightly bigger than 1/2" but will work in a pinch.,14mm just a hair smaller than 9/16",annoying but it will work.15mm is on its own,16mm=5/8",17mm slightly smaller than 11/16",18mm is its own,19mm=3/4",20mm is its own,21mm is just a hair bigger than 13/16",22mm=7/8",24mm=15/16".Just off the top of my head.
X1 Mike
Well-known member
Here is one.
http://www.jrcwelding.com/images/inch-conversion_20chart_20001.jpg
Starrett has a great pocket chart. I keep one behind the cover of my calculator, which is never far from me when I'm working.
http://www.jrcwelding.com/images/inch-conversion_20chart_20001.jpg
Starrett has a great pocket chart. I keep one behind the cover of my calculator, which is never far from me when I'm working.
Falcon67
Well-known member
For factional sizes such as X/Y", then ( 25.4 * X ) / Y gets a number you can use. 1/2 is 12.7 which is why a 13mm works, 3/4" is 19.05, etc.
Moose-LandTran
Well-known member
Yep. After a while you just "know".
The "real" test that you've arrived is when you can look at a nut or bolt and guess the right size by appearance. I can do that with SAE, but not metric - yet.
Xoloski
Active member
SAE to Metric Wrench Table
It is not an exact fit, but good enough for government work...
It is not an exact fit, but good enough for government work...
Wakefield
Well-known member
Wright Tool Catalog has a conversion chart in it for metrics trying to match inch-standard.
blackz26
Banned
http://www.garagejournal.com/forum/showthread.php?t=190399
Drill and tap chart is what you need. As stated in the link, if you have say a 14mm bolt that is rusty, and a 13mm is too loose, it helps to know the sae in between to hammer it on. Plus, youll get to know the sae "equivalent" to metric.
Drill and tap chart is what you need. As stated in the link, if you have say a 14mm bolt that is rusty, and a 13mm is too loose, it helps to know the sae in between to hammer it on. Plus, youll get to know the sae "equivalent" to metric.
Xoloski
Active member
Tap / Drill chart is far more accurate however, the above table will print to a 8.8 x 11 page and staple to the wall above the tool chest. The table serves as a fast reference for old people like me with less patience to read the fine print on a tap drill chart, and imperfect eye sight.
AmericanPreferred
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- May 8, 2013
- Messages
- 159
I measured a bunch of 1/2 wrenchs I have for a guy testing in another thread, they are all over the place, USA Allen, and Snap On were in the high 12.80'mm. The Blackhawk, Cman, Proto were just a hair over 13mm, like 13.03.
Dave455
Well-known member
Yes! These are included in the specification for that particular standard. In the U.K. these are published by the British Standards Institute, but are reproduced in many places. An old Stahlwille catalogue, for example, lists them in the back!
For a wrench of nominal size 10mm, it states that the wrench jaw opening should be between 10.04mm and 10.19mm! I very much doubt that metric and SAE would be the same. One would be specified in inches and the other in metric
for a start!
Of course, any manufacturer can elect to produce tools to a tighter tolerance. I feel that my Nepros wrenches, for example, are consistently towards the bottom end of the tolarences specified, and fit nuts much better as a result!
AmericanPreferred
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- May 8, 2013
- Messages
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They guy was testing 13mm wrenchs is why the measurements I posted are in mm. I measured some of my 10mm too, all are between 10.11 and 10.19 mm. I have found that those wrenchs on the tight side of the spec. Snap On for example, can be very hard to slide over a painted fastener.
Xoloski
Active member
I believe the original quest was to have a quick reference for SAE to metric wrenches for the purpose of substituting a SAE wrench when the mechanic (question originator) knew he didn't have an appropriate metric.
AKA Subject Creep.
But, it's all good conversation....
Just sayin'
AKA Subject Creep.
But, it's all good conversation....
Just sayin'
Here are some quick and simple ones I made a while ago that are in .doc format.
I highlighted the sizes that are close enough to each other between metric and SAE for them to work interchangeably without damage in almost all circumstances. I have a chart for wrenches and one for sockets, and anyone can adjust or modify it to their specific setup very easily.
I posted a screen shot of both of the files together as a picture so others can see what they look like before downloading the .doc files if they want.
I highlighted the sizes that are close enough to each other between metric and SAE for them to work interchangeably without damage in almost all circumstances. I have a chart for wrenches and one for sockets, and anyone can adjust or modify it to their specific setup very easily.
I posted a screen shot of both of the files together as a picture so others can see what they look like before downloading the .doc files if they want.
Attachments
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Xoloski
Active member
Nice work...!
RCStocker
Well-known member
25.4mm = 1 inch.
With simple math you can figure out any size.
With simple math you can figure out any size.
Xoloski
Active member
You are absolutely correct, math is king however, this posts theme is to have a quick reference at the ready.
When your hands are full of grease and grime and your wife is holding the part in place above her head on the creeper, it's not the time to be ********* the calculator...
When your hands are full of grease and grime and your wife is holding the part in place above her head on the creeper, it's not the time to be ********* the calculator...
blackz26
Banned
Whats the difference if its a socket or wrench?
Xoloski
Active member
Good question....
Perhaps a 6 point socket can accept more clearance than a 12 point wrench.
Most wrenches are 12 point.
Perhaps a 6 point socket can accept more clearance than a 12 point wrench.
Most wrenches are 12 point.
Haha, it doesn't make any difference at all. Those charts are my quick comparison charts for SAE and metric sizing, but they are also the charts I use for telling me all the sizes that I actually own of wrenches and sockets. If the size is listed on the wrench chart that means I actually own that size wrench etc. There are more on the socket list, because I don't own much above about 1-1/4" in wrenches. I also have a couple oddball sockets in 1/32 inch increments as well.
blackz26
Banned
Provincial
Well-known member
I have a chart in Excel format. It prints on letter size paper and I put mine in a heavy duty sheet protector from a ring binder. I may take it to a print shop and have a large wall chart made.
I tried converting it to a .doc file, but it is too large to attach.
I tried converting it to a .doc file, but it is too large to attach.
Xoloski
Active member
Send it in an excel format....
Provincial
Well-known member
Inch/Metric Wrench Sizes
Wrench Decimal Wrench Decimal Wrench Decimal
5/32 0.1563 14 0.5512 26 1.0236
4 0.1575 9/16 0.5625 27 1.0630
3/16 0.1875 15 0.5906 1 1/16 1.0630
5 0.1969 5/8 0.6250 28 1.1024
7/32 0.2188 16 0.6299 1 1/8 1.1250
6 0.2362 17 0.6693 29 1.1417
1/4 0.2500 11/16 0.6875 30 1.1811
7 0.2756 18 0.7087 1 3/16 1.1875
9/32 0.2813 19 0.7480 31 1.2205
5/16 0.3125 3/4 0.7500 1 1/4 1.2500
8 0.3150 20 0.7874 32 1.2598
11/32 0.3438 13/16 0.8125 33 1.2992
9 0.3543 21 0.8268 34 1.3386
3/8 0.3750 22 0.8661 1 3/8 1.3750
10 0.3937 7/8 0.8750 35 1.3780
11 0.4331 23 0.9055 36 1.4173
7/16 0.4375 15/16 0.9375 1 7/16 1.4375
12 0.4724 24 0.9449 37 1.4567
1/2 0.5000 25 0.9843 38 1.4961
13 0.5118 1 1.0000 1 1/2 1.5000
Excel isn't supported for attachments, so here is a cut and paste copy. I hope the spacing transfers properly into the post. It is lined up properly when I hit Submit Reply.
Yep, it screws up the spacing of the columns. Anyone know how to make columns stay straight?
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Charles (in GA)
Well-known member
?????
go to a Machinist's supply.....
they have the 3"x6" plastic metric/SAE drill/tap drill charts and the big wall charts with all the drill/tap sizes including pipe sizes too, both for free
never seen a metric/SAE wrench conversion chart
its kind of pointless.....
if you work on inch stuff buy the wrenches, if you work on metric stuff buy the wrenches
or save your money and buy pipe wrenches they'll fit anything
go to a Machinist's supply.....
they have the 3"x6" plastic metric/SAE drill/tap drill charts and the big wall charts with all the drill/tap sizes including pipe sizes too, both for free
never seen a metric/SAE wrench conversion chart
its kind of pointless.....
if you work on inch stuff buy the wrenches, if you work on metric stuff buy the wrenches
or save your money and buy pipe wrenches they'll fit anything
Provincial
Well-known member
Okay, no zip file save option. 