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How many times do you need a 16MM?

Leaky88

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Was going through tools this weekend. Sometime during the past 3 years, I had purchased a set of Craftsman Crowfeet wrenches in a little gray plastic bag. Probably used them 5 times total. I emptied the contents out and lined them all up. At first I thought I might be in need of new RX for glasses. Closer inspection revealed 2- 15MM's and no 16. Anyone else have this happen to them? Leaky
 
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Cope

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Once. If you're lucky you can find them at a Sears and make the swap. I've only needed 16mm a couple of times, and 5/8" is close enough for the girls we run with.
 

toolaholic

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16mm is slightly bigger than 5/8. 5/8 is .625. 16mm is .630. You could probably use a 5/8 for 16mm for fasteners w/ no corrosion. I tried a 5/8 on a rusty GM fuel filter but needed to use the 16mm. 5/8 would not fit.
 

stikman56

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Jun 12, 2014
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I use the wrench and sockets on busses. Not every day, but I do have a need for them.
 

FlyBy

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NE Ohio
Ditto on the VW/Audi cars. Most of them have 16mm fasteners, nothing so far that I'd need a crowsfoot though.
 

LXCam

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05 and up LX and LC dodge stuff, rear swaybar endlinks and two rearward facing trans bell housing bolts. Other then that, I can't think of any..haha
 

AndrewV

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Fl
Not bashing you op.
But these threads are showing up more, and more.

But drain plugs mainly. Some euro stuff.
Not unheard of, but enough to need it. Like a 20mm wrench.
 

oldldh

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May 22, 2012
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Fairhope, AL
I don't know how many times I'll use them...

But...

I got four (3/8" and 1/2" drive, shallow and deep) for Christmas...'

GearWrench doesn't skip sizes on the big sets...

For an OCD type, like Yrhmblsrvnt, that's important...
 

rayh91

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Aug 1, 2010
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SoCal
Had to use a 16mm yesterday to loosen swaybar end links on an Audi.
Then some random occasions like today I needed a 16mm to tighten install a CB antenna.
 

darkzero

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Oct 20, 2011
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SoCal
When I worked on cars (mostly Japanese imports) I can't recall ever using 16mm. But on my lathe one of the gears & my tool holders use 16mm.

I bought a cheap HF socket set to keep under the seat in my truck for emergencies. The damn thing doesn't come with 12mm, WTF? Well that's what I get for buying the HF set & for not checking. So I took the 16s out & replaced them with 12s.
 
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MattPersman

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They are all over new chrysler company in the last several years, but don't get rid of the 15s or 18s either cause you will have those mixed in.
 

Adam.C

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16 is the new 17mm. I predict we will see it first on domestic cars, then on new German products since it is a smaller, lighter, presumably, cheaper fastener. It is for the M10. The Japanese M10 head is 14mm, so they probably wont switch until they have to.

The old US ANSI std allowed an option for 15mm for this fastener (M10) as well. 15mm is also the std head size for flange head M12 bolts. 18 is the new 19mm for M12.

Read the socket size thread in my signature line if you want to know the full story. Or check out my little chart:

View media item 41026
 
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cowboy73

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Feb 13, 2010
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southern Indiana
I used a 16mm flare wrench and a 16mm crowfoot flare on my '97Dodge Ram replacing the high pressure power steering hose a few months ago. I also used them replacing a power steering hose on a 1992 Buick a couple of years ago. Not used often, but the right tool for the job helps keeps you from F'ing something up!
 

marcone

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Mar 23, 2010
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Romania
I have a full 6 to 32 mm spanner set in order not to bother myself with such questions :)
 

n8n

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16 is the new 17mm. I predict we will see it first on domestic cars, then on new German products since it is a smaller, lighter, presumably, cheaper fastener. It is for the M10. The Japanese M10 head is 14mm, so they probably wont switch until they have to.

The old US ANSI std allowed an option for 15mm for this fastener (M10) as well. 15mm is also the std head size for flange head M12 bolts. 18 is the new 19mm for M12.

Read the socket size thread in my signature line if you want to know the full story. Or check out my little chart:

View media item 41026

That chart right there is why I like metric sets that don't skip sizes.

I started working on cars with SAE or else old German standards, and it used to be so much easier... but now bolt heads could literally be any even mm size... can't really take ANY wrenches or sockets out of my toolbox to save space :/
 

franzdom

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Sep 7, 2009
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NC
16 & 18 are all over euro cars that used to be 17's & 19's, they have changed their bolts heads for these sizes.
 

Cope

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16mm is slightly bigger than 5/8. 5/8 is .625. 16mm is .630. You could probably use a 5/8 for 16mm for fasteners w/ no corrosion. I tried a 5/8 on a rusty GM fuel filter but needed to use the 16mm. 5/8 would not fit.

Only needed a 16mm one time when I didn't have it. Back in the early 70s, most wrench and socket sets skipped 16&18. A friend traded his Charger for a Volvo wagon w/ 4 wheel disk brakes, and the caliper bolts were 16mm. The 5/8" worked fine on them. Now I have plenty 16&18 coverage and don't need it.
 

ihateminimumwage

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Jan 26, 2012
Messages
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16 is the new 17mm. I predict we will see it first on domestic cars, then on new German products since it is a smaller, lighter, presumably, cheaper fastener. It is for the M10. The Japanese M10 head is 14mm, so they probably wont switch until they have to.

The old US ANSI std allowed an option for 15mm for this fastener (M10) as well. 15mm is also the std head size for flange head M12 bolts. 18 is the new 19mm for M12.

Read the socket size thread in my signature line if you want to know the full story. Or check out my little chart:

View media item 41026
Thanks for putting that together. Saved the chart to my computer. Always good info to have.:thumbup:

That chart right there is why I like metric sets that don't skip sizes.
No kidding. My IR impact socket set didn't include a 3/8" drive 16 or 18mm, had to buy fillers through Williams and Armstrong, and all it took was one China made CAT grader to make me glad I did!
 

MRunabout

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Jan 28, 2014
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134
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San Diego
Haven't had to use a 16mm on any Japanese car that I've worked on the plenty of Euro cars. I've also needed those super thin service wrenches on Euro cars.
 

Fugio

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Dec 5, 2014
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460
16mm pretty much never. But I own at least half a dozen 15mm wrenches and several sockets becasue I use 15mm ALL the time. In fact, I own more 15mm than any other size of anything. Most of our oil drain plugs are 15mm. And I do a lot of bicycle repair on the side and pretty much ALL department store bikes are full of 15mm nuts, including the ones that hold the wheels on. So I'd call it a bonus that you got a pair of them!
 
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