Male hdmi connector1/22/2024 ![]() ![]() A short pipe fitting having an FIP thread at both ends is sometimes called a coupling. For example:Ī short length of pipe having an MIP thread at both ends is sometimes called a nipple. In plumbing fittings, the "M" or "F" usually comes at the beginning rather than the end of the abbreviated designation. Main article: Threaded pipe Left: A male threaded pipe, Kapla or KEVA planks are extremely simple genderless systems interconnected only by gravity. Lincoln logs use a very simple form of genderless connections. Stickle bricks, using interlocking plastic protrusions, are effectively genderless. Meccano and Erector have many gendered connections, starting with the nut-and-bolt fasteners they use frequently. įor example, the canonical LEGO plastic blocks have "female" indentations on the lower surface, and "male" bosses or protrusions on the upper surfaces. Mathematicians have begun to classify well-known construction sets using group theory to study the combinatoric possibilities of structures that can be built. This should not be surprising, since these toys feature the nearly infinite flexibility and versatility of shape that a modular interconnect architecture can enable. Modular construction toys Lego toy brick connections are male on top, and female underneathĪlthough this aspect is not highlighted in their promotional literature, several common construction toys embody gendered (and in some cases, genderless) mechanical interconnections. Mechanical fasteners Female nut threaded onto a male bolt If the furrowed surface be convex, 'tis called a Male Screw if concave, a Female and where Motion is to be generated, the Male and Female are always join'd. A 1736 builder's manual mentions screw genders as metaphors for convex and concave shapes:
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