Difference Between Wood Screws And Sheet Metal Screws 6

Machine screws have finer threads than wood screws.

Difference between wood screws and sheet metal screws 6.

The threadless shank allows the top piece of wood to be pulled flush against the under piece without getting caught on the threads. Typically the threads extend from tip to head. They are easier to drive into metal and will offer a greater level of strength and security. The visible difference is in the thread.

Wood screws over an inch long have a threadless shank that s about one quarter to one third the total length of the screw. Wood screws have relatively wide spaced medium depth threads. If you re attempting to attach sheet metal you should choose metal screws. Sheet metal screws on the other hand always have a tighter sharper thread that cover their entire length.

A gage number like 6 is the diameter and the length is the length of the screw that goes into the wood not inclusive of the head unless it s a flat head. The sheet metal screws flaunt a straight shank along with a finer threading pattern other than the wooden rivets which are threaded only two thirds of the way up. These screws usually are short and have coarse threads that are designed to grab onto relatively thin sheet metal. Woods screws have a wider spaced medium depth screw.

The smaller the gage number the smaller the screw diameter opposite of nails and wire diameter. Wood screws are tapered and thread count is not part of the description. Although this is some times called a wood tapping screw it is basically a sheet metal design. In short wood screws are designed to be driven into wood materials while metal screws are designed to be driven into metal materials hence the names.

The threads on wood screws usually are coarse and deep to help them grab the wood. Some wood screws are tapered from tip to head also. These have a coarser pitch few threads per inch than sheet metal or machine screws and often have an unthreaded shank. Some wood screws longer ones often have a threadless shank at the top of them.

They are designed to be used in conjunction with a nut or tapped hole. Let us show you these differences so you can have all the information you need and use the right screw for the job. The threading on metal ones is available up to 3 inches and the wooden ones feature threading up to 1 inch. Sheet metal screws have deeper closer sharper threads that always extend over the entire length of the screw.

These screws are not really interchangeable.