What are the furniture screws and how to choose

What are the furniture screws and how to choose

The screws we use when installing and assembling furniture are called furniture screws. Furniture screws are not a single type, and there are various differences.
So what kinds of furniture screws are there?

1. Screws used for wood, usually called chipboard screws. chipboard screws can be divided into fine thread and coarse thread, with ribs and without ribs. Generally speaking, North America has more fine thread, while South America has more coarse thread. chipboard screws and all kinds of wood are the best assistants for DIY furniture. It is characterized by high hardness (after heat treatment), deep thread is suitable for joining wood, easy to use, small size can be screwed directly into wood without prefabricated holes, and prefabricated holes can be used for large size screw. depends on fine teeth without ribs or not.

2. Wood screw, a kind of heavy-duty wood screw, used to connect wood and iron plates. Note: The wood screw mentioned here is this. Hexagonal head wood screw, generally we don’t need it. It is mainly used between larger woodware and ironware Connection.

3. self tapping screws have high hardness, wide thread spacing, deep threads, non-smooth surface, wood screws, on the contrary, the other difference is more obvious, there is no thread on the back of wood screws. Wood screws are thin, sharp, and soft. Self-tapping screws are thick, sharp and hard.
4. There are also some furniture screws that do not have a unified name.Like below.that is eccentric screw.four for one function furniture screws.screw and nuts

So how do we judge the quality of a furniture screw when we get a furniture screw? The first is to see, which refers to observing the appearance, surface treatment, thread pattern. Good quality screws have a smooth appearance and uniform color. There is no floating rust and oil stains, the thread lines are neat, and the thread are evenly spaced. The head has no headshots, no chamfers, no cracks, and a balanced finish. There should be no burrs in the hole wall. Headshots, dark spots on the surface, delamination, etc. indicate poor screw quality. Then there is quantity, which refers to measuring with a ruler. Fasteners are divided into standard parts and non-standard parts. The standard parts have corresponding specifications and dimensions. The length and diameter can be measured with a vernier caliper. The measurement results of high-quality screws should be consistent with the corresponding standard parameters. Then if you have the conditions, you can use a hardness tester to test the hardness or conduct a professional salt spray test to see if it meets the corresponding standards.