The BSA A7-A10 Forum

Technical (Descriptive Topic Titles - Stay on Topic) => Gearbox, Clutch, Primary => Topic started by: RoyC on 04.12. 2017 09:02

Title: Nut / Spanner size
Post by: RoyC on 04.12. 2017 09:02

Does anyone know what size nuts / spanner these are ?
I want to get a ratchet spanner to do the job of getting them back on.

Long sliding plate bolts.

Title: Re: Nut / Spanner size
Post by: JulianS on 04.12. 2017 09:28

On the original - large hex takes 5/16w or 3/8BS. Nut takes 3/16w or 1/4BS.

With pattern parts could be metric heads you will need to try a 16 mm on the large head.

Title: Re: Nut / Spanner size
Post by: RoyC on 04.12. 2017 09:36

Thanks for that Julian.

Roy.

Title: Re: Nut / Spanner size
Post by: groily on 09.12. 2017 09:02

The table in the link here can be a bit handy sometimes (as long as you've got a slide gauge to measure across the flats)
https://www.sat.dundee.ac.uk/psc/spanner_jaw.html