"ALUMINUM ALLOY,QQ-A-200/3,T42; 3.063 IN. LG; 2.000 IN. W; 0.875 IN. H;MTG PLATE 0.125 IN. THK; TWO PARALLEL PLATES WELDED 0.312 IN. APART ABOUT CENTER LINE; TWO IN-LINE PIVOT HOLES 0.2490 IN. MIN 0.2505 IN. MAX DIA SPACED 0.375 IN. FROM END; FOUR 0.250 IN. DIA MTG HOLES ON 2.125 IN. BY 1.375 IN. MTG CENTERS; TWO 0.375 IN. DIA HOLES CENTERED BETWEEN MTG HOLES; BASE PLATE NOTCHED TO FORM CLEVIS CLEARANCE UNDER PIVOT HOLES"