This studs fits all PSI C or D screw superchargers. The threads are a 7/16-20 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. The 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.
Course end is .750", fine thread end is 1.050" and shoulder is .550". End to end is 2.50".
These studs are sold individual but if wanting a kit with nuts order #900-0010.