How To Size Sheet Metal Screws

Us sheet metal screw diameters.

How to size sheet metal screws.

Sizes typically range from 2 to 3 8. 8 x 1 2 8 x 3 4 8 x 1 by jetovo 12 99 12. Fasteners lying around and aren t quite sure what size they are or if you need to replace a missing bolt on a piece of machinery and need to know what size to get here are some methods to easily figure that out. Regardless of the material the driving point needs to be larger than the depth of the material being driven into.

Print this page. These rivets feature more girdles on top which help in providing a more finished appearance. Consequently burrs are common. For example 5 0 means the screws have a diameter of 5 mm.

If the metal is thicker and harder thread cutting screws are used. Screws with a diameter smaller than 1 4 have a nominal size indicated by a number e g. The engineered drill point and flute remove material efficiently and properly size the hole for threads. If you have some stray screws and bolts a k a.

The diameter refers to the major diameter or outside edge of the threads. Decimal nearest fractional 4 112. Jetovo 150 pack 410 stainless steel wafer head phillips self drilling screws sheet metal tek screws assortment kit modified truss head self driller size. These screws are also available in stainless steel and also in zinc plated.

Hex head roofing screws provide secure metal to metal fastening with strong holding power without the need to pre drill. Hex head roofing screws teks 9 x 1 1 2 in. Teks 9 x 1 1 2 in. If the screw size includes a dash with a number following it that is the number of threads per inch tpi.

If you re buying screws with the measurements listed on the packaging in the metric system then the first number represents the diameter. 1 4 and larger diameters are shown as inches. Sheet metal screws were originally designed for metal like for use in a b vent pipe but can be used for a number of other applications too they can be used with plastics rubber or plywood. Types a and ab which have a standard point and blunt point type b are common sheet metal screws.

Types a and ab are usually considered interchangeable.