Sizing Sheet Metal Screws

Tap and drill size chart standard tap size.

Sizing sheet metal screws.

Purchasing or using the wrong type of screw can lead to wasted effort time expenses or a failed project. Understanding screw sizes inch standards screws with a diameter smaller than 1 4 have a nominal size indicated by a number e g. Grainger offers a huge selection of sheet metal screws for your hvac and other metalwork projects. Self drilling screws also called teks have a tip that resembles a drill and often have spaced threads like sheet metal screws.

The simplest way to remember how to measure length. It s pretty easy to do all you need is a measuring tape or a ruler and the screws in question. Sizes of 4 40 to 3 8 16 are common. 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.

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. 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. Teks 9 x 1 1 2 in.

Select the head type and overall size you need in lengths ranging from 1 4 l to 4 l. Screw sizes are written in an odd looking code. Hex head roofing screws provide secure metal to metal fastening with strong holding power without the need to pre drill. Drill bit size inch 0 80 3 64in 1 64.

Print this page. Us sheet metal screw diameters. 1 4 and larger diameters are shown as inches. The engineered drill point and flute remove material efficiently and properly size the hole for threads.

This way you can make sure you get exactly the same size of screws when you go shopping for new ones. Steel hardened steel low carbon steel and stainless steel give sheet metal screws long lasting durability. Length is the distance from the flat part of the head to the tip or blunt end of the screw or bolt. Length of screws bolts.

If you have some loose screws but need more of the same kind then you will need to measure them. Decimal nearest fractional 4 112. Almost all screw head types will either be flat on. Hex head roofing screws teks 9 x 1 1 2 in.

The diameter refers to the major diameter or outside edge of the threads.