Pilot Drill Size For Sheet Metal Screws

In a single time saving operation these screws drill tap and fasten.

Pilot drill size for sheet metal screws.

To counterbore for striking head. 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. Sizes of 4 40 to 3 8 16 are common. Drill gauge no to be used for.

Lo driv tri round recommended pilot holes sizes inch screws. Inch approx us gauge material. 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. 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.

With that being said you may need to go up more sizes depending on other factors. Pilot hole sizes for metal screws and wood screws posted 30 january 2010 at 9 43pm by michael chu filed under. There is nothing more aggravating when you just don t know what size drill bit to use for a pilot. A size 4 screw should have a pilot hole drill size of 3 32 inches.

Life while installing shelving in my home i had to drill pilot holes for 8 and 12 metal screws into studs. And 5 16 inches 1 4 inches. Size 14 1 4 inches 3 16 inches. However there are times when sheet metal screws are required.

Size 10 9 64 inches. This should help whenever you run into a situation you need to drill a pilot hole and are not sure the size bit. Twist bit nearest size in fractions of an inch. Size 8 1 8 inches.

Your pilot hole drill bit size will depend on the size of your sheet metal screw. Self tapping screws sheet metal. To help my readers out i thought i would add this quick reference chart. No of auger bit.

Twist bit nearest size in fractions of an inch. For instance a non tapered brass screw that s size 6 would use 3 32 drill bit for softwood 7 64 drill bit for hardwood. Bit or drill sizes. Drill gauge no or letter to be used for maximum holding power.

For shank clearance holes. Size 6 7 64 inches. That allows for us to accommodate both the softer material and the non tapered screw tip. Types ab b self tapping screws in mild steel brass aluminium alloy stainless steel and monel sheet metal.

Size 12 5 32 inches.