Threads are a 7/16-14 on the nut side of the stud and on the manifold side a 7/16-14. The unique feature of these studs are that they have an internal broached hex that make installation a snap with an allen wrench.
Hard anodizing helps prevent galling and the alum. provides light weight while providing a safety factor in the event of a supercharger backfire saving your supercharger or manifold.
Stud is 2.160" overall, .750" coarse thread, .750" shoulder, .660" coarse thread.
This kit fits all PSI C & D screw superchargers, made from 7075 material.
PICTURE SHOWS SIX POINT NUTS BUT TWELVE POINT NUTS ARE INCLUDED WITH STUDS.