5/8" Arbor Threads

[Michael Lamore]

For a 1986 General 350, does anyone know the thread and pitch. Is it metric or IP thread.

thanks

mike

[Mike Henderson]

If no one can answer your question, get a set of thread gauges (I think that's what they're called). They look somewhat like feeler gauges but teeth are cut into them. Put each one in turn against the threads until you find the one that fits exactly. It'll be marked so you'll know what the threads are.

They're available in English and Metric.

Mike

[Martin Wasner]

It's likely an acme thread. I think they only come in one pitch on 5/8".

[Bruce Page]

There is not a standard metric equivalent to 5/8" (.625) so we know is not metric. I can't be positive but I would bet that it is a left hand 5/8-8 ACME.

[Dick Brown]

General 350 right or left tilt? If right tilt, left hand tread. left tilt, right hand tread. This is from a semi awake condition in my recliner. Please correct me if I have it wrong.

[David Kumm]

Just because the arbor is 5/8 doesn't mean the threads are. Thread gauge and caliper will tell you if standard. You can call General and ask as well. Lots of Generals over on owwm and canadianwoodworking forums too. Dave

[Bruce Page]

Just because the arbor is 5/8 doesn't mean the threads are. Thread gauge and caliper will tell you if standard. You can call General and ask as well. Lots of Generals over on owwm and canadianwoodworking forums too. Dave
Wouldn't it be difficult to run a standard, off the shelf dado set if the thread were anything but a 5/8" thread?

[Lee Schierer]

Mike, if the threads have flats on the top of the thread they are an acme thread and there is only one size in 5/8 diameter. An acme thread looks like this:326722

[David Kumm]

Probably not the case with the General, but many saws use threads with a smaller diameter and a set of spacers to take up the length. Allows for a stouter build as the shaft can remain larger. Dave