0.375 in. Thk epoxy resin sheet, type gee mil-p-18177; inserts /2/ 0.138-32-unc-2b helical coil thd by 0.240 in. Deep 0.150 in. Diameter by 0.380 in. Deep 120 degrees csk by 0.190 in. Diameter 4 holes; 2.950 in. Lg; 0.900 in. High 1st end 0.400 in. High 2nd end; 0.800 in. Wide flange; 0.070 in. Radius max; 0.500 in. Center to center distance between holes along width
