Bayonet Cap Fitting Types

There are a vast variety of caps and bases that exist in order to help make sure that only the correct type of lamp is used in any given fitting.

Bayonet cap fitting types.

The most common code is for bayonet caps is b22. A bayonet mount mainly as a method of mechanical attachment as for fitting a lens to a camera 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. Bayonet cap bulbs use a twist and lock action to secure into the fitting. Bayonet caps are mainly used in great britain and are distinctive by their push and twist action to install.

If your light fittings don t take screw cap bulbs odds are they require bayonet cap bulbs. Also known as the twist and lock bulb a bayonet cap bulb has two pins which retract and then expand into slots inside the fitting when twisted. There are many variations of a bayonet cap including some three pin versions known as b22d 3 found in new build homes and on some high pressure mercury lamps for industrial use. There are two main types of bayonet bases.

This section shows many of the most popular fittings. The commonly used bulbs in the uk. Caps provide the electrical contact to conduct electricity to the light bulb but it also helps to secure the light bulb into its fitting. Bayonet cap named for a fitting design that utilizes the same push and twist action used by soldiers to mount bayonets to their rifles a bayonet cap is the most commonly used base in the uk.

Standard bayonet cap bulbs are 22mm in diameter b22d but there.