Sizing Sheet Metal Screws

It s pretty easy to do all you need is a measuring tape or a ruler and the screws in question.

Sizing sheet metal screws. Us sheet metal screw diameters. Understanding screw sizes inch standards screws with a diameter smaller than 1 4 have a nominal size indicated by a number e g. Decimal nearest fractional 4 112. Hex head roofing screws teks 9 x 1 1 2 in.

Decimal 0 060 1 073 2 086 3 099 4 112 5 125 6 138 7 151 8 164 9 177 10 190 12 216 14 250. Steel hardened steel low carbon steel and stainless steel give sheet metal screws long lasting durability. After a hole has been tapped by a thread cutting screw it can be replaced by a machine screw of the same size diameter and number of threads per inch. Sequences like 4 30 x 10 1 8 10 x 4 6 and m5 4 x 15 may seem meaningless but they say a lot and you need the right screw to do the job.

Length is the distance from the flat part of the head to the tip or blunt end of the screw or bolt. Self drilling screws also called teks have a tip that resembles a drill and often have spaced threads like 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. Purchasing or using the wrong type of screw can lead to wasted effort time expenses or a failed project.

Sizes of 4 40 to 3 8 16 are common. 1 4 and larger diameters are shown as inches. Teks 9 x 1 1 2 in. The engineered drill point and flute remove material efficiently and properly size the hole for threads.

If the screw size includes a dash with a number following it that is the. Almost all screw head types will either be flat on. Grainger offers a huge selection of sheet metal screws for your hvac and other metalwork projects. Print this page.

Length of screws bolts. Select the head type and overall size you need in lengths ranging from 1 4 l to 4 l. Drill bit size inch 0 80 3 64in 1 64. This way you can make sure you get exactly the same size of screws when you go shopping for new ones.

The simplest way to remember how to measure length. Hex head roofing screws provide secure metal to metal fastening with strong holding power without the need to pre drill. 78 15 99 15. 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.

Tap and drill size chart standard tap size.