Bayonet mount
TYPE OF MECHANICAL FASTENING MECHANISM
Bayonet connector; Bayonet-mount; Bayonet base; Bayonet cap; B15d; B22d; GZ10; BA15d; BA15s; BA20d; B21s-4; B24s-3; Bayonet twist lock; BA22d; Light bulb bayonet mount; Bayonet socket; Bayonet coupling; Gu10 bulb; Bayonet connection
A bayonet mount (mainly as a method of mechanical attachment, such as fitting a lens to a camera using a matching lens mount) or bayonet connector (for electrical use) is a fastening mechanism consisting of a cylindrical male side with one or more radial pins, and a female receptor with matching L-shaped slot(s) and with spring(s) to keep the two parts locked together. The slots are shaped like a capital letter L with serif (a short upward segment at the end of the horizontal arm); the pin slides into the vertical arm of the L, rotates across the horizontal arm, then is pushed slightly upwards into the short vertical "serif" by the spring; the connector is no longer free to rotate unless pushed down against the spring until the pin is out of the "serif".