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'. JSTOR ( April 2012) ( Learn how and when to remove this template message)Ī bayonet mount A bayonet mount before and after insertion Early-19th century socket bayonet Socket of a bayonetĪ 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.Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. This article needs additional citations for verification.