How To Choose Sheet Metal Screws

Basic major diameters of.

How to choose sheet metal screws. 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. Wood screws use only two numbers such as 6 x 1 inch. A screw with this designation is 1 inch in length. Both are often used for sheet metal work.

These are usually threaded all the way to the head. 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. There is no interruption in the threading. Sheet metal or panhead screws are useful when the fastener does not need to be flush with the material countersunk.

Sheet metal screw sizes are listed using three separate numbers. A number 14 size sheet metal screws teks screws wood screws 2. 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. How to choose.

Understand how screw sizes are listed. Choosing the correct sheet metal screws for the project is important as the screw will be the main binder affixing materials together. Since the head is wider and the thread extends the entire length no shank. Round head screws are shaped almost like a half circle with a flat bottom.

A number 8 size sheet metal screws teks screws drywall screws particle board screws wood screws u drive screws 14. First know what you re screwing into. Most self tapping screws used to attach metal wall panels are made of c1018 c1022 carbon steel says stager. Screws are labeled according to their use.

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. This is convenient if you have not already created drill holes. These can be identified by the obvious curve on the junction connecting the head to the. Even sheet metal screws that tap their own threads need a pilot hole to get them started.

Some have self tapping tips and some have self drilling tips. If you re building a birdhouse for example you ll need wood screws.