Screw

A screw is an externally helical threaded fastener capable of being tightened or released by a twisting force (torque) to the head. The most common use of screws is to hold objects together and there are many forms for a variety of materials. Screws might be inserted into holes in assembled parts or a screw may form its own thread.

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Source: Wikipedia · Image: Wikimedia Commons · Public domain

MECHKIT

Mechanical know-how, applied — fasteners, torque, tolerances, and the DIY mechanics toolkit.

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