any 16, 18, or 21 mm nuts or bolts on 911??

[Randy Webb]

Are 16, 18, or 21 mm fasteners used anywhere on these cars?

I'm think of making some room in my tool cabinet and clearing out some Snap-Off wrenches. I can't find anywhere that these sizes are used....

[djmcmath]

I can't think of any 16s or 18s, but it seems like I just used a 21, can't remember where. Bumper nuts, maybe?

[donk]

I know for a fact that I haven't used a 21, since I don't own one. I do own sockets and wrenches in 16 and 18 mm sizes, but they haven't been used either. I haven't even come close to touching every fastener on the car though, so don't throw them out based on my word!

[HarryD]

Randy, don't know the answer but if your luck is like mine, you will find those bolt sizes in some critical area a week after you sell them .

[89911]

There's a couple of 16's on the engine. I think one of the cam oil line needs a 16mm to hold it when tightening.

[Randy Webb]

Thanks, I will take the 16 mm off my sell list.

Harry - Yup - I am familiar with this phenomenon (it probably has a name), but gonna do it anyway.

[john walker's workshop]

16 and 18 for weber fuel fitting banjo bolt and capnut to access the float valve. can't think of any 21s.

[cmonref]

Methinks a 21mm wrench is used on the #6 hose connections on the AC system.

[sayah]

An adjustable wrench will work just fine on most of these "big" sizes.

[Randy Webb]

Thx, John - Didn't know you were a Dead Head...

So it, sounds like things one does not need are:
20, 23, 25,26, 28, 29, 31, 33, 34, 35, 37 & up...

[Wil Ferch]

All A/C stuff is US-thread......

---Wil