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.

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

Wire terminals allow you to connect these bulbs to a power source through a panel.

Fit these bulbs in 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.