HEAD STUD BLOCK TO HEAD SHORT 4" LONG UNC 3/8"

3/8"unc stud with UNF end for head nut and is 4" long.

You require 5 of these high tensile short head studs and they torque to 42lb per sq ft.

For a complete kit which includes these top grade studs, see C-AHT279. 

For other long head stud, see CAM150 (5.75" long).

Cooper S requires head bolt C-AHT281.

These are also used for the oil filter head to block (pre spin on filter).