"ITEM CONSISTS OF CORROSION RESISTANT STEEL PASSIVATED IN ACCORDANCE WITH MIL-STD-171 PLUS BLACK OXIDE PER CLASS 4 OF MIL-C-13924 ALL OVER EXCEPT TAPPED HOLES AND BORE. ITEM MEASURES 0.250 IN. HIGH,1.11 IN. LONG,.74 IN. WIDE,HAS CENTER HOLE .1249 DRILLED THRU WITH 63MICRO-INCH FINISH,ALL OTHER FINISHS 125MICRO-IN.,2 HOLES 0.014 IN. DIA. 1 ON EACH END LOCATED .440 IN. FROM CENTER HOLE"