- alloy steel
- Molybdenum alloy steel of 150M psi and above after heat treating. Used for clevis pins and (4037, 4137) some screws. Aircraft quality alloy steel (4130,4340,8740) is used extensively in the Aerospace Industry for bolts, screws and clevis pins. Tensile strength minimum of 120M psi.
Dictionary of automotive terms. 2015.