Eagle 4340 Forged H-Beam Rods Eagle H-beam rods are forged from SAE 4340 2-piece forgings. The rod cap is forged separately so that the grain flow runs perpendicular to the load force which strengthens the rod. Also Eagle 3-D rods include a high content of nickel and chrome which increases strength and fatigue life. ARP 8740 cap screws are standard. Sets of 8.