metric - imperial -a/f -whitmore conversion charts??

[Skrewdriver]

looking at upgrading the toolbox
Needing conversions from metric - imperial -a/f -whitmore etc.
eg - a 10mm open end spanner would be what? 5/8 ? 7/16? 5/32 ??i'm at a loss
Anyone got a link to a conversion chart page? they all seem to be mm to kilometres etc

[nemesis_adrasteia]

you could work this out with a ruler mate.

also none of the measurements line up any good.

for exaple 1/4inch is something like 6.75 mm(from memory) 1/2 is 13.something so on and so forth

[Burnout124]

not all are interchangeable 1/2 inch -13mm, 9/16inch- 14mm, 13/16inch- 17mm, 3/4inch-19mm, 15/16inch- 23mm

[ari666]

9/16 is different to 14mm
1/2 is different to 13mm

about the only one that is close is 5/8th and 16mm any smaller than that and the differences become more obvious. if you use a 13mm on a half inch, youre a turkey and are gonna strip the bolt if its tight.

all measurements are divisions of 16 so:

1/16, 2/16ths (or 1/8th) 3/16th, 4/16th (or 1/4) 5/16th, 6/16th (or 3/8) 7/16th, 8/16th (or 1/2) 9/16th, 10/16th (5/8) 11/16th, 12/16th (3/4) 13/16th, 14/16 (7/8) 15/16th, 16/16 (1)

etc

[Hangman]

eg - a 10mm open end spanner would be what? 5/8 ? 7/16? 5/32 ??i'm at a loss

3/8 is the imperial equivalent to 10mm

But as above, they aren't exact equivalents. eg: 1/2in equivalent is 13mm but half an inch is just over 12.5mm. Easy to round bolt heads if you mix em up.

[zapper-l67]

looking at upgrading the toolbox
Needing conversions from metric - imperial -a/f -whitmore etc.
eg - a 10mm open end spanner would be what? 5/8 ? 7/16? 5/32 ??i'm at a loss
Anyone got a link to a conversion chart page? they all seem to be mm to kilometres etc

I had a bit of a chuckle at this one, It actually Whitworth not whitmore. (But there dinosaur spanners so who cares)
British Standard Whitworth refers to the shaft size not the head size.. So when the bolt is screwed in and you can't see the shaft, stuff knows what size it is..
British Standard Whitworth is almost dead as far as spanner sizes go, (I have replaced all my old Withworth spanners with 1 shifter) however the threads per inch and shaft sizes are used in many things still like camera tripods which are a standard 1/4 Withworth thread.

For more info British Standard Whitworth - Wikipedia, the free encyclopedia
Zapp

[VR38]

Worldwide Wholesale Distribution of Valves, Fittings, Tubing & Flanges: World Wide Metric

[Skrewdriver]

at the wreckers the other day,undoing nut on front brake lines and my 10mm spanner fit on nut but rounded the soft material,so im thinking maybe imperial size spanner could be the go.??

[Hangman]

Or use a line spanner

[Reaper]

at the wreckers the other day,undoing nut on front brake lines and my 10mm spanner fit on nut but rounded the soft material,so im thinking maybe imperial size spanner could be the go.??

Pipe spanner ftw!. To the OP - any mechanic worth their salt has a metric and imperial set of spanners & sockets. Use the right tool for the job and that makes it easy!

Reaper

[Drawnnite]

get both metric and imperial?
they normally come together in good toolkits.

[ari666]

yeah its as reaper says: use the right tool for the job. so have both.

i dunno if you are a 1st year or been working for 20 years in the trade, but if you are just learning, you need to get good at identifying bolt sizes. after using the wrong spanner and taking chunks off your knuckles a few times, you will soon understand why. not only that, but while you are bleeding, wrap the wound in electrical/masking tape and drill out the bolt you just rounded off

same as phillips head screwdrivers. the amount of times i see people using a 2 point on a 3 point screw, just makes me mad... the generic answer "oh, its a "plus screw" i was using the "plus screwdriver"

[Hangman]

after using the wrong spanner and taking chunks off your knuckles a few times, you will soon understand why. not only that, but while you are bleeding, wrap the wound in electrical/masking tape and drill out the bolt you just rounded off

Skin grows back, boltheads don't. That's the killer