These are a pair of Stainless Steel carburettor studs, nuts and washers that will fit a BSA B series engine. They are 1-1/2 inches long with a 5/16 Whitworth thread one end and an 5/16 Cycle thread the other. They are supplied together with two 5/16 Cycle nuts and the correct 5/16 rectangular section lock washers, all in stainless.
All British thread data can be viewed on our web site. Any queries please phone Motalia on 01953 789420 office hours.
All studs, nuts, washers etc can also be purchased separately from the Stainless Steel Fasteners section
These items are Made in England. I17x2 ok