Metric vs SAE. Differences and similarities. Which sizes can be substituted for others.

I’ve watched a lot of videos where mechanics are working on cars and they didn’t have the metric size needed or the standard size needed and they end up using a lo adjustable wrench or vice grips when maybe they could have just grabbed a different style of socket of wrench and got the job done. So here’s a little video breaking down what sizes of standards match metric. Thanks for watching.
#custom #shopduck #1969firebird #fabrication #howto #diy #tools #pontiac #chevy #metric #sae #size

[@Chapo-559]

Perfect video thank you !

[@jocarr1791]

I can't recall needing a 20mm for anything but, I need a 23mm to change my tablesaw blade. And it happens to be a shorter, double ended angle wrench. The cheap stamped steel wrench that came with it stretched wide open during the first attempted use.

[@tonysmith1046]

Propably not more today, but maybe up to mid 90:s, japanees cars 8-10-12-14-17-19mm fix any job. European cars 8-10-13-15-17-19 fix any job. Off course there is some smaller bolts and bigger bolts, but for moust work you get away with those sizes. Here we use 1/2" on rounded 13mm, 1/2" is 12,9mm. 14mm and 9/16" is in my opinion the same, or at least there is no feel diffrence if the vrench 9/16 or 14, grabb the one you find first.

[@nirfz]

The inside of a 1/2" socket is 12.9mm? Interesting, that means that there's 0.2mm tolerance to be able to get it on and off then.

[@geomax3465]

USA civilians NEEDS to adopt Metric once and for all. USA Military, Medicine, Film industry and Science already did. 🙄

[@ogresspeedshop]

I don’t disagree with you, however, I build classic American cars and they all still have SAE hardware on them which requires the standard tools. Most things 82 and newer are metric, some have both in the early 80’s. So there’s still a purpose for the standard tools