Spanner size

I'd have no qualms about using a good adjustable on that - much easier to hold steady than a tidgy 11mm+. Unwinding the wire is a much bigger problem than potential damage to the flat imo.

That is the matter ... GOOD adjustable.

If you can 'wiggle' the toggle in the adjustable that winds the jaw open / closed ... then its a crap tool and liable to round of nuts etc. Good quality - the toggle should be reasonably easy to turn - but not sloppy.
 
With respect to others who can chose their own methods. If the fitting is free then the correct spanner or an adjustable will work fine and result in no damage or slippage. If its seized then neither the correct spanner or an adjustable will work, theyll both slip if its seized solid and you will have to use something more brutal. I do usually have the correct open end spanner but if not I'll use an adjustable of decent quality and ensure the jaws are adjusted correctly. If it's free to turn then no problem.
 
In the very early 1960's I had a mini and wanted to put twin carburettors on it. In those days you only had 1/2 inch sockets and ordinary spanners (Britool ?) Snap On had not arrived and when garages did a clutch on a mini they would remove the engine and to remove the inlet manifold on a mini they would also either take the engine out or as an ordinary 1/2 inch spanner head was too large to fit the manifold bolts you would file down the shoulders of the spanner until it would reach the bolts. Of course in those days there were no small angle grinders and I think it was the early 1970's when Snap On arrived and when they showed me the 1/4 inch socket set it made everything so much accessible.
 
It is the flats on the swaged terminals that I was referring to. View attachment 201406
Rather than manufacturing a unique spanner to fit, it would be far more practical to file the flats down a little until the spanner you have fits the fitting. The nuts on my Blakes seacocks are some sort of Imperial size, requiring me to carry a spanner specifically for them. I filed the nuts down until they fitted a metric spanner.
All of this is as nothing compared with my 1948 MG TC. the original threads were cut on (French) Hotchkiss machinery bought by MG in the 1930s. The threads are metric, not ISO as we have now, but a smaller pitch. However, being British, the heads are BSF/Whitworth, requiring me to purchase sets of spanners that I had thrown out years ago. Replacement bolts need to be purchased from specialists at vast cost, meaning that for unseen use such as spring hangers it is cheaper and easier to buy ISO metric. Needing another set of spanners!
 
In the very early 1960's I had a mini and wanted to put twin carburettors on it. In those days you only had 1/2 inch sockets and ordinary spanners (Britool ?) Snap On had not arrived and when garages did a clutch on a mini they would remove the engine...

I think you mis-remember. 1/4 and 3/8 sockets were around in the 1960's from Britool and other makers. Perhaps people didn't look for them, or didn't want to spend money!

BTW, I've changed Mini clutches in-situ without any problems, definitely less work than taking the engine out.
 
All very interesting.

Seems the best tool I have available is an adjustable wrench.

Seemed to do the job easily enough.

My main issue with the adjustable I have aboard is that they rust on the threads making them awkward to adjust accurately. Perhaps a spot of grease on the threads would help....
 
All very interesting.

Seems the best tool I have available is an adjustable wrench.

Seemed to do the job easily enough.

My main issue with the adjustable I have aboard is that they rust on the threads making them awkward to adjust accurately. Perhaps a spot of grease on the threads would help....

Well yes, tools need TLC the same as anything else.
 
All very interesting.

Seems the best tool I have available is an adjustable wrench.

Seemed to do the job easily enough.

My main issue with the adjustable I have aboard is that they rust on the threads making them awkward to adjust accurately. Perhaps a spot of grease on the threads would help....
indubitably! 🥴
 
I might be dumb but can anyone explain me how an adjustable spanner (post #38) can be described as “metric”, “standard” or otherwise, since it can be adjusted to infinite sizes of any measuring system of the world?
Which is the difference between the two ends?
 
I might be dumb but can anyone explain me how an adjustable spanner (post #38) can be described as “metric”, “standard” or otherwise, since it can be adjusted to infinite sizes of any measuring system of the world?
Which is the difference between the two ends?
It was a joke.
 
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