How To Choose Sheet Metal Screws

A screw with this designation is 1 inch in length.

How to choose sheet metal screws.

These can be identified by the obvious curve on the junction connecting the head to the. A number 14 size sheet metal screws teks screws wood screws 2. Since the head is wider and the thread extends the entire length no shank. There is no interruption in the threading.

Sheet metal screw sizes are listed using three separate numbers. Sheet metal or panhead screws are useful when the fastener does not need to be flush with the material countersunk. Screws are labeled according to their use. Understand how screw sizes are listed.

Round head screws are shaped almost like a half circle with a flat bottom. Basic major diameters of. A number 8 size sheet metal screws teks screws drywall screws particle board screws wood screws u drive screws 14. For example 3 8 inch 16 x 1 inch means that the screw has a diameter of 3 8 inch and contains 16 threads per inch.

Both are often used for sheet metal work. First know what you re screwing into. Pan head and oval head screws both have rounded sides but the pan head is flat on top while an oval head has a rounded top and a tapered base that can be counter sunk. Wood screws use only two numbers such as 6 x 1 inch.

Most self tapping screws used to attach metal wall panels are made of c1018 c1022 carbon steel says stager. Screws are defined by a series of three numbers and each are an important identifier when you are considering the effectiveness of the screw for a given project. Some have self tapping tips and some have self drilling tips. These are usually threaded all the way to the head.

This is convenient if you have not already created drill holes. You can use a chart to determine what hole sizes to drill but if you don t know the number of the screw or don t have a chart handy you can use the screw itself as a guide to choose the right drill bit. If you re building a birdhouse for example you ll need wood screws. Your hardware store will have rows of wood screws sheet metal screws drywall screws and the like.

These screws are case hardened so that the surface of the screw is hard enough to tap the steel sheet and girt without stripping. Even sheet metal screws that tap their own threads need a pilot hole to get them started.