4140 Steel cylinder head bolt for 1939 – 1941 Cadillac V8. Used to hold the water outlets to the cylinder head. Heat treated to grade 8 condition for maximum wear resistance and durability.
Material: 4140 Steel, heat treat grade 8
Finish: Natural
Thread: 7/16-14
Thread length: 1.100
OAL: 3.109
Hex: .750
Length under head: 2.671
Head height: .437
