Any owner of HS 125 Dominie Parts cataloque?

Pleased to have been of some assistance – good luck with your project!

Thank you very much, 1/4 bsf it is!
Time to order some nuts.
Regards
Gary Morton

Here are the part numbers for you :- Part 270 = 25CF1115 & Part 275 = 25CF1117

I hope that this is of assistance to you!

Deciphering the bolt head symbols would have been my first solution. But the head is blind within the internals. And to take it out, i risk damaging or unsettling all the adjustments of the column. So option 2 was to ask for the part number. It looks like a 3/16 or 1/4 BSF thick stiff nut. But always a good idea to check while i am waiting for delivery of said nuts, which is option 3, trial and error!
Regards

I have forwarded over the details to the museum and I will get back with their feedback in due course.

Thank you very much for the drawing. Very useful. It looks like the bolts fixing the yoke to the column are the ones marked 270 and 275.
If you can find the RAF/AM part number for me, i can decipher the bolt size.
Thanks once again.
Gary Morton

Thank you, that would be appreciated.
Regards
Gary Morton

I will make some enquiries at Newark – they may have a set of APs in their archive relating to XS726.