Sizing Sheet Metal Screws

The engineered drill point and flute remove material efficiently and properly size the hole for threads.

Sizing sheet metal screws.

Hex head roofing screws teks 9 x 1 1 2 in. It s pretty easy to do all you need is a measuring tape or a ruler and the screws in question. Grainger offers a huge selection of sheet metal screws for your hvac and other metalwork projects. Tap and drill size chart standard tap size.

1 4 and larger diameters are shown as inches. If the screw size includes a dash with a number following it that is the. Print this page. Length of screws bolts.

Understanding screw sizes inch standards screws with a diameter smaller than 1 4 have a nominal size indicated by a number e g. The diameter refers to the major diameter or outside edge of the threads. If you have some loose screws but need more of the same kind then you will need to measure them. Screw sizes are written in an odd looking code.

Self drilling screws also called teks have a tip that resembles a drill and often have spaced threads like sheet metal screws. 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. 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. Steel hardened steel low carbon steel and stainless steel give sheet metal screws long lasting durability.

This way you can make sure you get exactly the same size of screws when you go shopping for new ones. 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. Purchasing or using the wrong type of screw can lead to wasted effort time expenses or a failed project. Teks 9 x 1 1 2 in.

Almost all screw head types will either be flat on. Decimal nearest fractional 4 112. Length is the distance from the flat part of the head to the tip or blunt end of the screw or bolt. 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.

Us sheet metal screw diameters. Hex head roofing screws provide secure metal to metal fastening with strong holding power without the need to pre drill. The simplest way to remember how to measure length. Select the head type and overall size you need in lengths ranging from 1 4 l to 4 l.

Sizes of 4 40 to 3 8 16 are common.