6 Sheet Metal Pilot Hole

This should help whenever you run into a situation you need to drill a pilot hole and are not sure the size bit.

6 sheet metal pilot hole.

Blunt screws for sheet metal. Drill a pilot hole cut threads and fasten in one motion with these metric threaded screws. Screw size hard wood soft wood countersink size. A size 4 screw should have a pilot hole drill size of 3 32 inches.

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. In case you need to drill a hole and thread it for a screw or bolt. Size 14 1 4 inches 3 16 inches. Tapered bit straight bit tapered bit straight bit 2.

Size 6 7 64 inches. Step 4 drill correctly. And 5 16 inches 1 4 inches. Your pilot hole drill bit size will depend on the size of your sheet metal screw.

Size 10 9 64 inches. Tap and drill sizes. Like twist bits hole saws chuck right into your drill and will cut through thin gauge sheet metals like aluminum and steel. Life while installing shelving in my home i had to drill pilot holes for 8 and 12 metal screws into studs.

Drilling screws save you time and effort by drilling their own holes and fastening metal up to 0 500 thick in a single operation. Size 8 1 8 inches. 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. 3 32 1 16 5 64 1 16 1 4 3.

7 64 5 64 3 32 1 16 1 4 4. Self tapping screws sheet metal. Aluminum sheet and bar including aluminum andzinc die castings and all alloys in rockwell b hardnessrange from 40 70 and other ductile materials of similar hardness such as brass bronze etc note special materials and applications may warrant special hole sizes. Sheet metal screw to drill bit size table screw size drill bit size 2 3 32in 4 1 8in 6 5 32in 8 3 16in 10 13 64in 12 1 4in 1 4in 9 32in 5 16in 21 64in.

Use a scrap of plywood as a backer for the hole saw s pilot bit and to protect your work surface. For large holes a hole saw gets the job done cleanly and quickly. Print this page. Pilot hole sizes for metal screws and wood screws posted 30 january 2010 at 9 43pm by michael chu filed under.

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. Wood screw pilot hole sizes. Sheet metal screws.