| GENERAL CHARACTERISTICS ITEM DESCRIPTION | MATERIAL:ALUMINUM ALLOY;1.812 IN.LG FROM BOLT HOLE CENTERS;0.88 IN.W; FOUR HOLES 0.313 IN.DIA COUNTERSUNK 80DEGREES TO 0.221 IN.DIA;0.375 IN. BETWEEN BOLT HOLE CENTERS ALONG W; HEAT TREAT TO TEMPER T4 AFTER FORMING;SURFACE TREATMENT:ANODIC FILM,CHROMIC ACID,TYPE 1,CLASS 1 OR TYPE II,CLASS 1OR CHEMICAL FILM,CHROMATE,CLASS 1A |