#5 – Triangular reduced shank 3/8″ x 16 tpi into head chromoly studs for STOCK HEADS WITH STOCK IRON CYLINDERS. SS Spring washers. High strength 416 alloy SS Long nuts. Requires 3/8″ x .620” x 16 thread Time-Serts in head.


High strength ARP. The triangular shape allows a reduced shank while still locating the head on the cylinders. 12 pt nut and Belleville spring washers included. See Timesert installation.