Rocker Arm Nut Thread Size:3/8-24 in.
Rocker Arm Nut Thread Length (in):1.000 in.
Effective Stud Length (in):1.895 in.
Base Thread Length (in):0.710 in.
Quantity:Sold as a set of 16.
Notes:Fits most Small Block Ford with 3/8 screw-in studs. Machine work may be required.