"STEEL,MIL-T-21014 TYPE 2,DIM.,1.985 IN. MIN,2.015 IN. MAX OD,0.280 IN. MIN,0288 IN. MAX ID,0.559 IN. MIN,0.569 IN. MAX THK,ID COUNTERBORED ONE SIDE TO 0.687 IN. NOM DIA BY 0.299 IN. NOM DEEP W/CORNERS ROUNDED 0.050 IN. RADIUS,TWO THREADED HOLES,W/10-32 UNF CLASS 3B THD LOCATED ON 1.500 IN. DIA,WEIGHT 1.0 LB PLUS OR MINUS 6 GRAMS"