"ALUMINUM ALLOY 2014-T6 QQ-A-225/4,HARD ANODIZE PER AIRESEARCH EMS 52401 TY I CL B,ALL SURFACES 250.0 MICROINCHES EXCEPT OUTER EDGE IS TO BE 125.0 MICROINCHES,1.860 IN. MAX 1.840 IN. MIN OD,1.760 IN. MAX 1.740 IN. MIN ID,0.170 IN. MAX 0.150 IN. MIN H,1 CTR HOLE 0.172 IN. MAX 0.166 IN. MIN DIA THRU"