1 1/2 NPTF Taps | McMaster-Carr

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	Pipe Size Pipe Size	Show

1 1/2

	Pipe Size Pipe Size	Hide

	Thread Type Thread Type	Show

NPTF

	Thread Type Thread Type	Hide

	Thread Direction Thread Direction

Right Hand

Left Hand

	For Use On For Use On

	Threads Per Inch Threads Per Inch

11 1/2

	Individual/Set Individual/Set

Individual

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Drill Bit Decimal Size Equivalent Drill Bit Decimal Size Equivalent

1.7188"

	Number of Tapping Ends Number of Tapping Ends

	Drill Bit Size Drill Bit Size

1 23/32"

	Maximum Tapping Depth Maximum Tapping Depth

1 3/4"

	Number of Flutes Number of Flutes

	Overall Length Overall Length

4 1/4"

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	Thread Length Thread Length

1 3/4"

	Finish Finish

Uncoated

	Material Material

High-Speed Steel

	Shank Type Shank Type

	Square

	Application Application

Through-Hole Threading

Closed-End Hole Threading

	Chamfer Type Chamfer Type

Plug

	Flute Type Flute Type

	Straight

	Pitch Diameter Limit Pitch Diameter Limit

Not Rated

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2 Products

Pipe and Conduit Thread Taps

Plug Chamfer

Create threads sized for pipe and conduit. For use on most metal and plastic, these high-speed steel taps are durable enough for small-scale tapping jobs, but they're not recommended for production use. They have a square shank that's compatible with tap wrenches and tap holders for drill presses and milling machines.

Uncoated taps are strong enough for most tapping jobs but have the shortest tool life. Plug-chamfer taps are a versatile choice for most tapping applications. With 3-5 chamfered cutting threads, they require moderate torque and are often used for start-to-finish tapping of through holes and closed-end holes. When using them to tap closed-end holes, be sure to leave sufficient space at the bottom for chips to accumulate.

For technical drawings and 3-D models, click on a part number.

NPT and NPTF

					Drill Bit			Plug Chamfer
Pipe Size	Thread Type	Threads Per Inch	Thread Lg.	Overall Lg.	Size	Decimal Size Equivalent	No. of Flutes		Each
Uncoated High-Speed Steel
1 1/2	NPTF	11 1/2	3"	4 1/4"	1 23/32"	1.7188"	7	00000000	0000000

Left-Hand Pipe and Conduit Thread Taps

Tap left-hand threads for pipe and conduit. For use on most metal and plastic, these high-speed steel taps are durable enough for small-scale tapping jobs, but they're not recommended for production use. The square shank is compatible with tap wrenches and tap holders for drill presses and milling machines. All have a plug chamfer with 3-5 chamfered cutting threads, so they're suitable for start-to-finish tapping. When using them to tap closed-end holes, be sure to leave sufficient space at the bottom for chips to accumulate.

For technical drawings and 3-D models, click on a part number.

					Drill Bit			Plug Chamfer
Pipe Size	Thread Type	Threads Per Inch	Thread Lg.	Overall Lg.	Size	Decimal Size Equivalent	No. of Flutes		Each
Uncoated High-Speed Steel
1 1/2	NPTF	11 1/2	1 3/4"	4 1/4"	1 23/32"	1.7188"	7	00000000	0000000