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What is an internal threaded pot magnet?

	An internal threaded pot magnet is a type of pot magnet with a threaded hole through the centre.
	An internal threaded hole is a cylindrical hole with continuous grooves, known as threads, in a spiral pattern around the inside wall of the hole.
	The internal threaded hole allows the pot magnet to be attached to non-ferromagnetic materials which have corresponding grooves such as threaded bars or bolts. The internal threaded hole can fit M4 to M20 threaded studs and bolts.
	The internal threaded hole runs the entire length of the pot magnet allowing maximum thread contact between the internal threaded hole and a screw or bolt, for secure clamping. This allows the magnet to be used on dirty and uneven surfaces which a magnet may have found difficult to attract to normally.
	An internal threaded pot magnet can come with one to four internal threaded holes. If the pot magnet has four threaded holes, it is known as a limpet pot magnet, and can be used to fit onto a clamp mounting with bolts. This is often used to mount a camera onto a car for filming purposes.
	Internal threaded pot magnets can be used as magnetic bases for gauges, for example, an articulated gauging arm. An articulated gauging arm is used to precisely position objects within metrology (the science of measurement).
	There are two types of internal threaded pot magnet: shallow internal threaded pot magnets and deep internal threaded pot magnets.
	Shallow internal threaded pot magnets Shallow internal threaded pot magnets are thin and flat, and often used when there is a restricted height such as hanging seasonal decorations, where the deep internal threaded pot magnet cannot be used without looking too obtrusive.
	Deep internal threaded pot magnets Deep internal threaded pot magnets on the other hand, are tall and thin with a depth of over 20mm (0.79"). They are used when there is no height restriction, e.g. retrieving large ferromagnetic objects from water or as a magnetic base for objects such as an articulated gauging arm.
	How to use an internal threaded pot magnet To use an internal threaded pot magnet, you will need to use another non-ferromagnetic threaded object such as a bolt or accessory.
	To attach the accessory or threaded bolt onto the internal threaded pot magnet, turn the non-ferromagnetic object clockwise into the internal threaded hole. The bolt needs to be twisted clockwise into the internal threaded hole to attach it. To remove the internal threaded pot magnet, turn the non-ferromagnetic object or accessory anti-clockwise.