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

These miniature bulbs are sized to fit older telephone switchboards, signs, instruments, and indicators.

Use these bulbs in tight spaces, such as in indicators and vehicle lights.

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

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

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

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

Pins on the base lock these bulbs into sockets to withstand vibration.

Pins on the base lock these bulbs into sockets to withstand vibration. They're often used in machines and elevators.

Detect UV-reflective materials that are invisible to the naked eye.