Pilot Drill Size For Sheet Metal Screws

Size 10 9 64 inches.

Pilot drill size for sheet metal screws.

For shank clearance holes. 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. No of auger bit. That allows for us to accommodate both the softer material and the non tapered screw tip.

Size 14 1 4 inches 3 16 inches. Drill gauge no to be used for. In a single time saving operation these screws drill tap and fasten. There is nothing more aggravating when you just don t know what size drill bit to use for a pilot.

Size 12 5 32 inches. To help my readers out i thought i would add this quick reference chart. To counterbore for striking head. Material thickness inch nominal screw size diameter tpi.

Sizes of 4 40 to 3 8 16 are common. Twist bit nearest size in fractions of an inch. It is important that the correct hole size is used and the recommendation below should be followed but if very hard material is being used a hole size slightly larger may have to be used and in very soft material a smaller hole. Do not use self drilling screws in blind holes holes that do not pass through the material.

Bit or drill sizes. And 5 16 inches 1 4 inches. Sheet metal screws 100 our trucks deliver throughout se sw florida to place an order please call customer service at 1 800 226 5555 or fax to 800 582 6110 nominal screw size number of threads per inch 2 32 3 28 4 24 5 20 6 20 7 19 8 18 10 16 12 14 1 4 14 5 16 12 3 8 12 48 46 44 36 32 30 29 21 3 16 5 5mm i 21 64 0760 0810 0860 1065 1160 1285. Size 8 1 8 inches.

Drill gauge no or letter to be used for maximum holding power. Self tapping screws sheet metal. Life while installing shelving in my home i had to drill pilot holes for 8 and 12 metal screws into studs. Size 6 7 64 inches.

With that being said you may need to go up more sizes depending on other factors. This should help whenever you run into a situation you need to drill a pilot hole and are not sure the size bit. Types ab b self tapping screws in mild steel brass aluminium alloy stainless steel and monel sheet metal. Lo driv tri round recommended pilot holes sizes inch screws.

A size 4 screw should have a pilot hole drill size of 3 32 inches. Pilot hole sizes for metal screws and wood screws posted 30 january 2010 at 9 43pm by michael chu filed under. Inch approx us gauge material. Your pilot hole drill bit size will depend on the size of your sheet metal screw.

Twist bit nearest size in fractions of an inch.