Professional Custom Lamp Holder Accessories Manufacturer

E12 ceramic lamp holder bindding screw specification:
Material: copper/iron/aluminium
1)Porcelain lampholder E12, lamp base
2)UL,VDE,CE
3)cheap price with good quality
4)fittings:copper, aluminum,iron or zinc alloy
 
E12 ceramic lamp holder Candelabra (US), 12mm diameter, typically found on night light bulbs, chandelier bulbs,
The metal screw itself forms one of the contacts for the circuit. If the lighting system is not correctly wired, or a lamp is plugged into a non-polarized outlet, the metal screw can become energized, presenting an electric shock hazard to anyone attempting to change the lamp.
Screw ceramic lamp holders are more suitable for small size bulbs.
A bulb fully screwed home is more secure than a bayonet fit bulb.