Thanks John lots of options there, have quite a large Halfords near by so will try there first, if not there are plenty of engineering companies
etc around so it should be easy to find now I have an idea where to look.
On another tack it would be useful to have a record of fastner sizes for equivelant and slightly obscure part numbers - especially for things like
this.
***UPDATE***
For those of you that are interested Halfords no longer carry small parts like roll pins, the selection of items that are on display, the bolts,
split pins and washers etc are all they have. However, I have found a web site that will provide a selection of 420ish imperial roll pins for about
£12.00 inc P&P address below for those that are interested..
http://www.justoffbase-tools.co.uk
Cheers,
Yan