DRILLING SCREW SELECTION CHART Screw Size Maximum Drilling Capacity* 10-24 x 3/4" 1/4" Plywood to .175 Metal 10-24 x 1" 3/8" Plywood to .175 Metal 10-24 x 1-1/4" 1/2" Plywood to .175 Metal 10-24 x 1-1/2" 1/2" Plywood to .175 Metal 10-24 x 1-7/16" 5/8 & 3...