Sizing Sheet Metal Screws

If you have some loose screws but need more of the same kind then you will need to measure them.

Sizing sheet metal screws.

Hex head roofing screws provide secure metal to metal fastening with strong holding power without the need to pre drill. Screw sizes are written in an odd looking code. 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. 78 15 99 15.

Decimal nearest fractional 4 112. Grainger offers a huge selection of sheet metal screws for your hvac and other metalwork projects. The diameter refers to the major diameter or outside edge of the threads. Length of screws bolts.

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. The simplest way to remember how to measure length. 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. Select the head type and overall size you need in lengths ranging from 1 4 l to 4 l.

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. Teks 9 x 1 1 2 in. 1 4 and larger diameters are shown as inches. Almost all screw head types will either be flat on.

This way you can make sure you get exactly the same size of screws when you go shopping for new ones. Understanding screw sizes inch standards screws with a diameter smaller than 1 4 have a nominal size indicated by a number e g. Us sheet metal screw diameters. Drill bit size inch 0 80 3 64in 1 64.

It s pretty easy to do all you need is a measuring tape or a ruler and the screws in question. The engineered drill point and flute remove material efficiently and properly size the hole for threads. Purchasing or using the wrong type of screw can lead to wasted effort time expenses or a failed project. Self drilling screws also called teks have a tip that resembles a drill and often have spaced threads like sheet metal screws.

Print this page. Steel hardened steel low carbon steel and stainless steel give sheet metal screws long lasting durability. Hex head roofing screws teks 9 x 1 1 2 in. If the screw size includes a dash with a number following it that is the.

Sizes of 4 40 to 3 8 16 are common.