Use these bulbs in ovens and equipment that reaches temperatures up to 500° F.

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

Small but powerful, these bulbs are commonly used in stage and security lighting.

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

Bulbs have two filaments, which operate at different brightness levels.

Bulbs have two filaments, which operate at different brightness levels.

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.

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.