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Pipe And Nipple Thread Sizes

1/4-27
1/8 IPS
1/4 IPS
3/8 IPS
1/2 IPS
1/4" dia.
3/8" dia.
1/2" dia.
5/8" dia.
3/4" dia.
- Common on harp tops & some finials
- Most common size for table lamps and regular-size fixtures
- Often used on floor lamps and cluster bases
-Used on large chandeliers and other heavy duty applications
-Used on large chandeliers and other heavy duty applications