I think I have one, don't know where I got it or if I've ever used it. Saw this comment on a youtube Ford flathead build video that its intended for the water pump bolts that are in the radiator hose connection:

"The head of the bolt in the water pump inlet was 5/8" but they rusted away after a while, I think that's why socket sets at that time included a 19/32" socket' which you sometimes needed to remove that bolt!"

Is that really what a 19/32" socket is for? Know any other use for one?

11/16, 13/16, 19/32... every once in a blue moon, of course most of the old stuff ya need them for is long gone.


Never lose my 4 1/8" socket.



(the irony/joke there being that I own TWO 3 1/2" socket because we did in fact lose one for a while and had to buy a second one)

Older machinery and cars used 19/32 size nuts for heavy duty applications instead of 9/16 size nut.

Some older ford engine used 19/32 size nuts on the connecting rods.

The 19/32 socket or wrench is made for that size nut, not for rounded nuts. Of course that socket plus others can be used for rounded nuts or bolts, but is a size that is sometimes needed. Or use a 15mm.

.

I was told by Cousin Phil that 19/32 was used on old military equipment. Phil was a motor pool sarge, mostly for tanks and recovery vehicles. I have sets of sockets that have been in the family since 40s and 50s. There several 19/32

quote:

Originally posted by cas:
13/16,

Spark plugs.

I bought a set of sockets from Harbor Freight that I have on hand for rounded nuts.

quote:

Originally posted by cas:
11/16, 13/16, 19/32... every once in a blue moon, of course most of the old stuff ya need them for is long gone.


Never lose my 4 1/8" socket.



(the irony/joke there being that I own TWO 3 1/2" socket because we did in fact lose one for a while and had to buy a second one)

Where did you get a wrench marked 8/16???
Looks bright shiny new.

When I was a kid, there was something on our fleet of two cylinder John Deeres that required a 19/32. We had wrenches and sockets.
It escapes me now exactly what that was ….and it may have only been on the propane powered models….

Does anyone here remember the British Standard sizes? And why 7/16, 9/16 & 11/16 et al (1/2", 5/8" & 3/4" respectively) came about?

quote:

Originally posted by Cassandra:
Does anyone here remember the British Standard sizes? And why 7/16, 9/16 & 11/16 et al (1/2", 5/8" & 3/4" respectively) came about?

Certainly do. Owned British bicycles and motorcycles together with friends owning British cars in the 60’s to 70’s. Always a lot of fun when at two in the morning you’re putting something together and drop a bolt or nut and can’t find it. And it’s something you cannot substitute a USS or SAE fastener as a temporary fix.

quote:

Originally posted by Greymann:
...Or use a 15mm.

19 / 32 X 25.4mm = 15.08125mm

If you have a 15mm wrench/socket, you also have a 19/32" one. BTW, to those who weren't already aware, 5/8 = 16mm and 3/4 = 19mm. Not mathematically equivalent but functionally equivalent. That's why in large toolsets that include both SAE & metric sizes, often one of the SAE or its metric equivalent will be skipped, b/c for wrenching purposes, they are interchangeable.

Sometimes you have a standard screw strip the threads so just tap the hole for the larger MM screw.

quote:

Originally posted by Cassandra:
Does anyone here remember the British Standard sizes?

Yes, When rebuilding a Ford 2.8L V6 I found out they sourced it from BMW.

Every fastener on the outside was Imperial.

The short block was Metric.

The valve adjustment could not be tone without British Standard tools.

I saw a youtube video that discussed early attempts to standardize bolts and nuts in the 1800s in US shipyards. One of these standards resulted in hex heads being in 32nd of an inch. That means the reasoning speculated in my original post and query isn't true, that 19/32" hex sockets weren't for corroded away 5/8" hex heads in Ford V8 water pumps.

How many 19/32 sockets do I need to offer as sacrifice to get a single 10mm to return from the abyss?

The only thing I ever lose are 25/64" sockets.

I posted awhile back about having difficulty finding a wrench in that size.

Forget what I was working on.