Sheet Metal Pilot Hole Size Chart

If you re working with brass screws go up 1 size as well to accommodate the softer metal.

Sheet metal pilot hole size chart.

Size 8 1 8 inches. Size 12 5 32 inches. Size 10 9 64 inches. 3 32 1 16 5 64 1 16 1 4 3.

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. Sheet metal screws. Pilot hole drill bit size chart for wood screws january 27 2019 handtools 0 tools. Size 14 1 4 inches 3 16 inches.

And 5 16 inches 1 4 inches. Machined countersinks are created with a drill press and formed countersinks are made with punch press tooling the best option depends on your project and part geometry. 7 64 5 64 3 32 1 16 1 4 4. Size 6 7 64 inches.

Wood screw pilot hole sizes. Tapered bit straight bit tapered bit straight bit 2. Sheet metal countersink chart choose from a variety of standard countersink options which can either be formed or machined into sheet part parts. Lo driv tri round recommended pilot holes sizes inch screws.

To help my readers out i thought i would add this quick reference chart. 5 32 7 64 9 64 3 32 5 16. 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. Life while installing shelving in my home i had to drill pilot holes for 8 and 12 metal screws into studs.

Pilot hole sizes for metal screws and wood screws posted 30 january 2010 at 9 43pm by michael chu filed under. Brass isn t the only exception here any wood screw made of a material that s softer than steel should go up a size as well. This should help whenever you run into a situation you need to drill a pilot hole and are not sure the size bit. There is nothing more aggravating when you just don t know what size drill bit to use for a pilot.

Inch approx us gauge material 020 055 26 17 diameter 061 122 16 11 diameter 125 245 11 3 diameter 250 312 3 5 16 diameter 313 500 5 16 1 2 diameter. 1 8 3 32 7 64 5 64 5 16 6. Material thickness inch nominal screw size diameter tpi. When working with brass wood screws.

Self tapping screws sheet metal. Your pilot hole drill bit size will depend on the size of your sheet metal screw. Screw size hard wood soft wood countersink size. Print this page.

7 64 5 64 3 32 1 16 1 4 5. However there are times when sheet metal screws are required. Step 4 drill correctly.