See also: Threads. Search for woodscrew books on Amazon.co.uk

Are a type of threaded fastener that come in different lengths, diameters, and types of heads. They fasten or hold together parts. In the Design Studio we use #4-40, #6-32, #8-32, and #10-32 screws the ran in length from 0.500" to 2.000". For example: The #6 in #6-32 refers to the diameter of the screw (witch is a reference to the wire size that the screw was made from) (smaller number - smaller diameter) and 32 witch refers to the number of threads per inch.

Fabric attachment that uses screws for fastening. The cover is stretched tightly over the frame and attached using self-tapping hexagonal screws.

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A ship's propellers.

Screws are mostly used to replace damaged or lost screws. The right screw is determined by the location on the machine, use, etc.