No. Of teeth 3; diametral pitch 2.5; pressure angle 30 deg.; helix angle 45 deg. Ref.; lead 3.7699; pitch dia. 1.2000 ref.; this part mates with p/n 266880 (nsl) ; material 2668466 cres investment casting rh "c" 32-38; similar to p/n 2668806, nsn 2915012489006, rotor; item converts air preesure to rotorational energy used on engine
