Bakelite e12 lamp base all thread and lock screw:
Specification: e12 lamp base full thread lock screw.
Rating:75W-125V
Hull: Phenolic
Approval: UL,CE RoHS
Terminal: Set-screw terminals for 0.5mm2-2.5mm2 wires provided with full- threads shell and outer ring, seris provided with four pieces of parts: cap, shell, interiror and outer phenolic ring.

LED bulb E12 lamp base is slight smaller screw-in lamp holder than then E14 screw-in lamp holder. Often used in LED chandeliers retro fits and as energy efficient alternatives to night lights. The E12 LED and E14 LED lamps are also known as LED flame bulbs and LED bulbs.