This complete 18-piece outer case cover screw set is suitable for fitment to the early unit-construction BSA A50 and A65 twins from 1962-1968. This set includes the screws for the primary chaincase and outer timing cover, as well as the tachometer cable adaptor.

Sourced from the UK and threaded to 1/4″-26 TPI BSF, this set contains replacements for (2) 67-0716 3/16″-24 x 1/2″, (7) 70-8160 1/4″-26 x 1-1/2″, (6) 70-8168 1/4″-26 x 1-3/4″, and (3) 68-0229 1/4″-26 x 2-1/4″ screws. Note: the (3) 68-0229 outer timing cover screws were originally 2-3/4″ long but are supplied in this set as 2-1/4″ UH. These screws are stainless steel with Allen heads.

The socket heads are a convenient upgrade for routine clutch service and timing cover removal, providing a positive engagement with the Allen wrench used for loosening and tightening the screws. The bright stainless finish provides a durable and attractive upgrade from the original fillister head screws.

It is advisable to clean the threads in the crankcase with a tap to allow for best thread retention and an oil-tight seal between the primary chaincase cover and the crankcase. Thread locking compound is not recommended for use on cover screws.

For this set to suit 1968 onward BSA unit twins, click here.