Because if you're turning bolts on something other a late model vehicle, you might need them.
Besides, we're stupid. We cling to an outdated system of measurement that no longer applies to many things.![]()
Best Answer
Because if you're turning bolts on something other a late model vehicle, you might need them.
Besides, we're stupid. We cling to an outdated system of measurement that no longer applies to many things.![]()
I quoted the wrong message, and can’t figure out how to delete this message.
The metric system has been officially the preferred system of the US since 1975 when the metric conversion act was passed and signed. Executive order 12770 requires the federal government to use metric units.
You don't have to like it, but facts don't stop existing because you don't like them.
https://en.wikipedia.org/wiki/Metrication#:~:text=In the 19th century, the,law was adopted in 1871).
Take a look at this chart. The last time a country switched over completely to the metric system was 2005, and it was a small island with nowhere near the infrastructure of the U.S. Prior to that was 1975. That's forty-six years ago. 70.5% of countries that are completely switched over to the metric system did so prior to 1950. There was just less infrastructure to switch over.
The reality is it's easy to sit back and say that we're stupid for not switching over to the metric system, but that's ignorant. There are lots of factors and nuances involved.
As I said earlier, the metric system is the more efficient system of paper (though not in every aspect), but it's a waste or resources to switch over. We can understand and use the imperial system just fine.

Just wait...at some point you'll need a pretty good set of torx and e-torx if you want to work on newer cars and motorcycles!
I think they just use it as an advertising point. Toss in the SAE set and bump the tools count, same deal as the worthless hex keys. Late models do still need 1/4, if you use aftermarket hose clamps.![]()
At work - most of my SAE is for old american stuff, and to operate tools like pulley-pullers, thread chasers, where the tool itself is SAE. Pretty rarely used stuff.
At home, or outside of the vehicle trade, there's still lots of SAE floating around.
Yet they've managed to change over in nearly all other imperial unit countries.
....Am I missing something?
Electrical, HVAC, plumbing is mostly in SAE.
If all of that was sold with metric hardware, it would still be forever until tradesmen would not need SAE.
I heard a joke recently.... lets see if I can remember it correctly.
There are only two kinds of countries in this world, those who are metric, and those who have landed on the moon.
.
Whoever made up the joke must not know that Russia and China use the metric system and they've put people on the moon.
Didn't know either one had actually put people on the moon....Know they've put probes there, but not actual humans.
I heard a joke recently.... lets see if I can remember it correctly.
There are only two kinds of countries in this world, those who are metric, and those who have landed on the moon.
.
Exactly
Electrical especially residential is still mostly flat head screws. Or those terrible combo heads that instantly strip when you use #2 phillips
If we are still using flat head screws I cant imagaine how long it would take to phase out SAE in the trades.
Everytime one of these threads pop up I cant help but wonder how anyone in the US can do anything without SAE tools.
Flat blade screwdrivers? Don't Euro metric flatblade screwdrivers work just fine here in the US?
Here's a comparison photo of PB Swiss, Klein and Wiha driving a common countersunk screw. The PB Swiss 6.5 mm fills the slot perfectly. The Klein 1/4" also is an excellent fit but the corners do stick out because of the shape of the countersunk screw. The Wiha 5.5 just wedges in at the very tip and doesn't fill the slot. The Wiha 6.5 (not shown) doesn't fit at all. All these screwdrivers are good screwdrivers but they don't all fit the same. Standard screw sizes have a range so having lots of choices is a good thing.
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Not really. For example, most USA 1/4" slotted drivers are around 1mm thick whereas 6.5mm German slotted slotted drivers are 1.2mm thick. You'll sometimes need to use an undersized (like 5.5mm) German driver that doesn't fill the 1/4" slot.
Looks like PB Swiss works just fine.

Yes, the PB Swiss is 1mm. Iirc the PB Swiss insulated of the same size is 1.2 though.
German 6.5mm drivers are typically 1.2mm.
I know I'm a terrible mechanic as I can't tell a metric fastener from an SAE fastener by sight. The only work I do on my vehicle is change the oil. Most of what I work on is SAE so I always start with SAE. I do a lot of work on a Toro Groundsmaster mower where everything is SAE except the engine.
I know I'm a terrible mechanic as I can't tell a metric fastener from an SAE fastener by sight. The only work I do on my vehicle is change the oil. Most of what I work on is SAE so I always start with SAE. I do a lot of work on a Toro Groundsmaster mower where everything is SAE except the engine.
Flat blade screwdrivers? ...
Thats actually incorrect, that was executive order (Metric Conversion Act) made in 1975 to wanting to use metric and was only voluntary and only a suggestion (good will), wasn't a mandate or executive order.
The current official measurement of the United States is still Imperial (SAE) as stated in United States customary units. In 1975 the act also created the United States Metric Board that was to help transition the United States to metric but Ronald Reagan abolished that board in 1982 and SAE (inch stuff) has stuck ever since.
Metric is better but SAE is very much alive and well for many more decades to come. The cost to transition industrial tooling in US factories to metric would be absolutely massive and crippling for a lot of industries here in the States so were stuck with it.
I don't think anyone disputes that metric is better but SAE is very much alive and well. Typically when I'm working on any SAE it's almost always better than the **** metric stuff coming from the east (Japan not included) and we don't get a a lot of Euro machinery here. So a lot of SAE machinery will last decades and could be justified the rebuildable cost, hence tools needed for it. This doesn't apply to everything.
What would you rather have, a china Jet drill press or a USA made Clausing or Powermatic drill press?
Whoever made up the joke must not know that Russia and China use the metric system and they've put people on the moon.