20 TPI BSA Forktube Top Nuts
97-2652 & 97-2652/A
Now available from British Cycle. These have internal threads and will do all pre1969 BSA and 1969/70 B44VS
97-2652 Forktube Top Nut, 20 TPI, Chrome, Sold Each
97-2652/A Alloy Forktube Top Nuts, 20 TPI, Sold As Pair
97-2652/A pictured