CARB MANIFOLD STUD 5/16", 88SS, 650 AND ATLAS

WHEN THE TWINS FIRST RECEIVED THE DOWN DRAUGHT HEAD (CIRCA 1960 500SS) THE MANIFOLD STUD SIZE INCREASED FROM 1/4 TO 5/16 AND THE THREAD IN THE HEAD WAS ALWAYS 5/16 BSW RIGHT TILL THE LAST COMMANDO. THE STUD POSITION ALSO CHANGED FROM AN OBLONG PATTERN TO A STRAIGHT HORIZONTAL LINE. LENGTHS DID VARY LIGHTLY DUE TO DIFFERENT MANIFOLD LENGTHS. THIS STUD IS 2 5/16" (59MM) OVERALL LENGTH. ONCE FITTED TO THE CYLINDER HEAD THERE WOULD BE A PROJECTION OF 1 15/16" (48MM). THIS STUD IS BRIGHT ZINC PLATED. SEE 067855K FOR A PACK OF 4 STUDS AND 4 STAINLESS LOCK WASHERS AND 4 REDUCED HEX STAINLESS NUTS.