Sheet Metal Pilot Hole Size Chart

Self tapping screws sheet metal.

Sheet metal pilot hole size chart.

The problem was i didn t know how big to drill the holes and when the holes were too small it was quite difficult to. Inch approx us gauge material. Life while installing shelving in my home i had to drill pilot holes for 8 and 12 metal screws into studs. Pilot hole and shank clearance hole boring recommendations for wood screws screwdiameter bit or drill sizes no of auger bit to counterbore for striking head for shank clearance holes for pilot holes hard woods soft woods twist bitnearest size in fractions of an inch drill gauge no or letter to be used for maximum holdi.

This should help whenever you run into a situation you need to drill a pilot hole and are not sure the size bit. Sheet metal screws. To save you time our quick reference chart above will tell you which drill bit to use for a given screw size. There is nothing more aggravating when you just don t know what size drill bit to use for a pilot.

Drill size hole diameter nominal screw size number of threads per inch 6 18 7 16 8 15 10 12 12 11 14 10 20 9 24 9 32 30 29 21 3 16 5 5mm l 11 32 1160 1285 1360 1590 1875 2165 2900 3438 drill size hole diameter suggested hole sizes for types ab b 25 hole size hole size suggested hole sizes for types a. Tap size drilling chart provides a list of standard size taps specifying the diameter and thread spacing for fractional metric and screw sizes. Thus drilling pilot holes will help you save on the materials cost and offer a better appearance to your final product. However there are times when sheet metal screws are required.