"ALUMINUM BROZE AMS 4640,3.808 IN. MIN TO 3.818 IN. MAX O/A LG,2.067 IN. MIN TO 2.069 IN. MAX O/A W,0.937 IN. MIN TO 0.938 IN. MAX O/A H,MACHINED SURFACES 16.0 AND 250.0 MICROINCH FINISH,1 MTG HOLE THRU TAPPED 0.250-28 NF-3B THD,2 MTG HOLES THRU TAPPED 0.375-24 NF-3B THD"