Size
- 1/8 IP Top
- 1/4 IP Bottom
- Height: 5/8"
Brass Lamp Necks - Couplings are threaded differently at each end. One end screws onto 1/8 IP the other end screws on to 1/4 IP. Very useful when joining these two commonly used lamp thread sizes. Solid Brass
Common Lamp Thread Sizes
- 1/8 IP - 3/8" outside diameter, screws into most lamp sockets
- 1/4 IP - 1/2" outside diameter