1/4 HEX TCT COUNTERBORE (FOR METAL WORK)
CODE COUNTERSINK DIAMETER SIZE
RY505-564 3/8" 5/64"
RY505-332 3/8" 3/32"
RY505-764 3/8" 7/64"
RY505-18 3/8" 1/8"
RY505-964 3/8" 9/64"
RY505-532 3/8" 5/32"
RY505-1164 1/2" 11/64"
RY505-316 1/2" 3/16"