Speedo drive thread size

[Tractorman]

What is the thread size of the speedo bush that hold the worm drive in, please? The hub has been at the powder coaters and the threads are clogged with paint and it's hard.

[gizmo]

M14x 1.5 pitch I believe

[Tractorman]

Thanks, but the appears to be thread 16mm but not sure about the pitch.

[bike grim]

Sure it’s the same as the side casing oil plugs

[Chadley]

A quick look in my notebook shows I previously measured one as M16 x 1.5mm.

[martyn dwane]

the side casing plug hole is M16 x 1.5, as i had to buy a tap recently fo clear the threds on one.
im positive the speedo drivebush is M14 x 1.5 as i purchased a tap to clear the threads after powder coating a hub, many years ago.
The "nut" that screws onto it is M12 x 1.00mm.

[ULC Soulagent]

Sure it’s the same as the side casing oil plugs

It is Gareth, just tried it on a S3 stainless type but on brass version it wouldn’t

[Tractorman]

Can confirm m16x1.5, thanks for your help.