"STEEL,QQ-S-698,CRCQ OR CR TEMPER 4,0.060 IN. THK 15.375 IN. 0/A LG BY 1.000 IN. 0/A W,3 PLAIN 0.218 IN. NOM DIA HOLES,C TO C DISTANCE 12.875 IN. BETWEEN FIRST AND THIRD HOLES 0.625 IN. FROM EDGE ALONG THE LG,LOCATED 0.375 IN. FROM EDGE ALONG THE W,ENAMEL OD PER TT-E-529 OR TT-E-485"