1 1/2"-11 1/2 NPS Straight Pipe Tap, High Speed Steel

Model #: NPS-1-1/2

Price: $135.50

Description: 1 1/2"-11 1/2 NPS HS Straight Pipe Tap 0343-0041

• Size-Thread: 1 1/2 - 11 1/2
• Straight Pipe Tap - NOT tapered.
• High Speed Steel. Ground Threads.
• Approximate Thread Diameter: 1.9"

Often used in light fixtures and lamps.
The "pipe size" listed (such as 1/2"-14) gives the inside diameter of the pipe this tool is intended to thread a hole to accept the outside of, followed by the threads per inch the tap will cut.