Stud to hold the clutch case to the engine and gearbox, 3 of which are required. 5/16" UNC thread for alloy fitment for gearbox with UNF thread the other end for the nuts. These are 1.5" long.
The 6 longer ones are 22A152.
These studs are also used as manifold studs on Mini spares alloy heads.
Recommend: 3 x 53K547 per Mini.