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Furniture screw

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Furniture screw

A furniture screw can refer to any type of screw (and sometimes nut) used on furniture. Different types of screws have different uses in furniture.

According to a 1986 article in New York Times, screws on old furniture can be difficult to remove due to rust.

Furniture screws come with many different types of screw heads. In older times, screws with slotted heads were often used in furniture, but these types of screw heads are usually avoided in modern furniture in favor of more practical tool slots. Popular options in the 2020s include Phillips, Torx and hex heads.[citation needed]

Wood screws are common in furniture in general, and for furniture uses they typically have diameters between 3.5 mm and 5 mm (#6/0.1380 in to #10/0.1900 in).

A Chinese study published in 2019 which compared different types of screws used in medium density fiberboards (MDF) for furniture purposes found that the most important factor for how well a screw worked was the depth of the screw, and secondly the diameter of the hole. The screw type itself, however, had the least effect on the strength of the join.

Some common types of specialty furniture screws and bolts, especially on seen ready-to-assemble furniture, are:

Knock-down fasteners are a class of fasteners designed to allow for repeated assembly and disassembly. They are often used in flat pack furniture, which is typified by items such as book cases and wall units that come in a package of pre-cut and pre-drilled components ready to assemble by a novice. Knock-down fasteners can generally be assembled with a single driver, such as a hex key, which may be included in a hardware kit that comes with the product. They self-align when tightened, and allow for a secure connection without requiring drilling or gluing by the consumer.

One common type of knock-down fastener is the cam lock, used in butt joints. After two members are brought together, a cam lock in one member is twisted, locking onto a dowel extending from the second member, and securing the joint.

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