How To Choose Sheet Metal Screws

There is no interruption in the threading.

How to choose sheet metal screws.

How to choose. Most self tapping screws used to attach metal wall panels are made of c1018 c1022 carbon steel says stager. Both are often used for sheet metal work. This is convenient if you have not already created drill holes.

If you re building a birdhouse for example you ll need wood screws. 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. Understand how screw sizes are listed. Your hardware store will have rows of wood screws sheet metal screws drywall screws and the like.

Choosing the correct sheet metal screws for the project is important as the screw will be the main binder affixing materials together. First know what you re screwing into. A number 14 size sheet metal screws teks screws wood screws 2. These screws are case hardened so that the surface of the screw is hard enough to tap the steel sheet and girt without stripping.

Screws are labeled according to their use. These can be identified by the obvious curve on the junction connecting the head to the. A number 6 size sheet metal screws teks screws drywall screws particle board screws wood screws u drive screws 8. Basic major diameters of.

Even sheet metal screws that tap their own threads need a pilot hole to get them started. A number 8 size sheet metal screws teks screws drywall screws particle board screws wood screws u drive screws 14. 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. Sheet metal or panhead screws are useful when the fastener does not need to be flush with the material countersunk.

Some have self tapping tips and some have self drilling tips. Wood screws use only two numbers such as 6 x 1 inch. These are usually threaded all the way to the head. Round head screws are shaped almost like a half circle with a flat bottom.

Since the head is wider and the thread extends the entire length no shank. Sheet metal screw sizes are listed using three separate numbers.