#4 x 1/4" (Sq. Dr) Pan Tapping A Screw
#4 x 1/4" Type U-Drive Screw OD= 0.116" Max. , 0.112" Min.
#2 x 1/4" Type U-Drive Screw OD= 0.100" Max. , 0.097" Min.
#6 x 1/4" (Sq. Dr) Pan Tapping A Screw
#6 x 1/4" Type U-Drive Screw #B-1857 OD= 0.140" Max. , 0.136" Min.