Screw 30-49mm: PM9V or 420V (S90V)
Screw >/=50mm: PM9V*, 420V (S90V)*, Elmax, Hastelloy, Nitralloy 135, 4140HT, 4340HT
Flight Hardening Options: Nickel-based: Colmonoy 56, 57 and 83
Application Driven Options: Chrome, Ceramic Chrome, Nitride, Carbide Encapsulation
Additional base materials and flight hardening available based on application
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