Pins on either side of the base lock these bulbs into sockets.

These bulbs are small, but very bright, so they're often used in flashlights and optical instruments such as projectors and microscopes.

Offset pins on the base lock these bulbs into sockets. One pin is slightly higher on the base than the other pin.

Commonly used in signs, instruments, indicators, and flashlights.

These bulbs are sized to fit tight spaces such as signs, control panels, indicators, and flashlights.

Often used as status indicators, in displays, or to check circuit function in prototyping and testing, these bulbs have wire terminals to directly install onto circuit boards.

Fit these bulbs in tight spaces such as signs, control panels, indicators, and flashlights.

These bulbs are sized to fit tight spaces such as indicators and vehicle lights.