Size Of Sheet Metal Screws

The size of a screw is characterized by a proportional number from 0 24 which defines the head and shaft diameter not the length.

Size of sheet metal screws.

Hilitchi 190 pieces 10 stainless phillips drive hex washer head self drilling sheet metal tek screws with drill point 1 2 to 1 1 4 size inside plastic box 8 by hilitchi 15 78 15. Types a and ab which have a standard point and blunt point type b are common sheet metal screws. An industry numeric size preceded by a sign. Us sheet metal screw diameters.

Grainger offers a huge selection of sheet metal screws for your hvac and other metalwork projects. 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 3 8in 25 64in. Sizes typically range from 2 to 3 8. A number 6 size sheet metal screws teks screws drywall screws particle board screws wood screws u drive screws.

If the metal is thicker and harder thread cutting screws are used. 78 15 99 15. Screws for sheet metal more corrosion resistant than 18 8 stainless steel screws these have excellent resistance to chemicals and salt water. Screws sold with imperial system measurements on the packaging list the gauge first and the length next.

Tap and drill size chart standard tap size. To obtain the actual diameter multiply the screw size by 13 and then add 060 inches. Steel hardened steel low carbon steel and stainless steel give sheet metal screws long lasting durability. The sharp threads draw material together and ensure a secure hold.

Select the head type and overall size you need in lengths ranging from 1 4 l to 4 l. Types a and ab are usually considered interchangeable. Made from hardened steel the threads create their own mating thread in pre drilled holes. They don t usually list the threads per inch.

If they include the thread count it comes between the two numbers like 10 35 x 2. For example 10 x 2 means that the screw is a 10 gauge and is 2 inches long. These sizes were standardized based on sizes already commonly in use in the market. A size 8 screw is twice the shank diameter of a size 4 screw.

Order your supply online from grainger. Decimal nearest fractional 4 112.