2a thread class right-hand pan head style 20 thread quantity per inch 1/4"-20 x 1/2" phillips pan head zinc plated machine screw zinc screw surface treated unc thread series
Used on mrap - unique nsn - 2 mrap variants. 6g thread class right-hand 14.0mm thread length hexagon head style bolt, shoulder shoulder shape round with 6.4-7.9 mm min-max length; min tensil 85 ksi m thread series