How To Size Sheet Metal Screws

These rivets feature more girdles on top which help in providing a more finished appearance.

How to size sheet metal screws.

For example 5 0 means the screws have a diameter of 5 mm. Hex head roofing screws teks 9 x 1 1 2 in. 1 4 and larger diameters are shown as inches. Decimal nearest fractional 4 112.

If you have some stray screws and bolts a k a. Us sheet metal screw diameters. This is how the diameter is represented for screws in the metric system. Hex head roofing screws provide secure metal to metal fastening with strong holding power without the need to pre drill.

These screws are also available in stainless steel and also in zinc plated. If the screw size includes a dash with a number following it that is the number of threads per inch tpi. Their heads can be either phillips head or slotted head. 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 are usually considered interchangeable. Teks 9 x 1 1 2 in. The oval head types of sheet metal screws resemble the regular flat head screws but have slight variation. Regardless of the material the driving point needs to be larger than the depth of the material being driven into.

If the metal is thicker and harder thread cutting screws are used. The engineered drill point and flute remove material efficiently and properly size the hole for threads. 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.

Jetovo 150 pack 410 stainless steel wafer head phillips self drilling screws sheet metal tek screws assortment kit modified truss head self driller size. Print this page. Sizes typically range from 2 to 3 8. If you re buying screws with the measurements listed on the packaging in the metric system then the first number represents the diameter.

Consequently burrs are common.