STEEL COMP 303 MIL-S-7720; 0.859 IN. MIN 0.875 IN. MAX OD MAJOR END; 0.347 IN. MIN 0.357 IN. MAX MINOR END; 1.016 IN. MIN 1.040 IN. MAX O/A LG; 4 HOLES 0.124 IN. MIN 0.128 IN. MAX EQUALLY SPACED; FITTING THD 0.625-24 UNEF 3B; MINOR END JET 0.319 IN. MIN 0.325 IN. MAX ID; 125.0 MICROINCH FINISH