Grand Brass Lamp Parts, LLCAnswer
Oct 06, 2025 - 06:20 AM
The 1/4-18 IPS thread used in lamp pipe has 18 threads per inch and features straight (parallel) threads, not tapered. This is the standard threading used throughout the lighting industry for assembling lamp parts and fixtures.
For a better understanding of lamp thread sizes and compatibility, please refer to this helpdesk article.
