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Pipe Taps and Dies

NPT Taper HS Pipe Taps

NPT (National Pipe Taper) taps have a taper of 3/4" per foot.
Ground Threads. High Speed Steel. Hand Taps.
This is the tap to use for ANPT applications.
NPT joints generally require a sealant.
NPTF (dryseal) is called for in high pressure situatuions.

Follow this link to see the corresponding Pipe Dies for these Taps.

Follow this link to see more technical info and dimensions of taper pipe threads on Wikipedia.

Follow this link to explore our complete offering of taps, dies, and other threading tools.
Quantity Price Model Description Size-Thread Drill Size

$5.90 NPT-1/16
1/16"-27 NPT HS Pipe Tap 1/16 - 27 --

$5.90 NPT-1/8
1/8"-27 NPT HS Pipe Tap 1/8 - 27 R

$5.90 NPT-1/8SS
1/8"-27 NPT HS Pipe Tap with small shank 1/8 - 27 R

$7.50 NPT-1/4
1/4"-18 NPT HS Pipe Tap 1/4 - 18 7/16"

$9.90 NPT-3/8
3/8"-18 NPT HS Pipe Tap 3/8 - 18 37/64"

$13.60 NPT-1/2
1/2"-14 NPT HS Pipe Tap 1/2 - 14 23/32"

$19.50 NPT-3/4
3/4"-14 NPT HS Pipe Tap 3/4 - 14 59/64"

$35.80 NPT-1
1"-11 1/2 NPT HS Pipe Tap 1 - 11 1/2 1-5/32"

$57.40 NPT-1-1/4
1 1/4"-11 1/2 NPT HS Pipe Tap 1 1/4 - 11 1/2 1-1/2"

$76.00 NPT-1-1/2
1 1/2"-11 1/2 NPT HS Pipe Tap 1 1/2 - 11 1/2 1-47/64"

$122.00 NPT-2
2"-11 1/2 NPT HS Pipe Tap 2 - 11 1/2 2-7/32"

$215.00 NPT-2-1/2
2 1/2"-8 NPT HS Pipe Tap 2 1/2 - 8 2-5/8"

$310.00 NPT-3
3"-8 NPT HS Pipe Tap 3 - 8 3-1/4"

$450.00 NPT-3-1/2
3 1/2"-8 NPT HS Pipe Tap 3 1/2 - 8 3-3/4"

$550.00 NPT-4
4"-8 NPT HS Pipe Tap 4 - 8 4-1/4"

Regal NPT Taper HS Pipe Taps

Made in USA by Regal Cutting Tools.
A few sizes are made by Hanson-Whitney while our stock lasts.
NPT (National Pipe Taper) taps have a taper of 3/4" per foot.
Ground Threads. High Speed Steel. Hand Taps.
This is the tap to use for ANPT applications.
NPT joints generally require a sealant. NPTF (dryseal) is called for in high pressure situatuions.

Follow this link to see the corresponding Pipe Dies for these Taps.

Follow this link to see more technical info and dimensions of taper pipe threads on Wikipedia.

Follow this link to explore our complete offering of taps, dies, and other threading tools.
Quantity Price Model Description Size-Thread Drill Size

$20.15 NPTR-1/16
1/16"-27 Regal Regal NPT HS Pipe Tap 1/16 - 27 --

$20.15 NPTR-1/8
1/8"-27 Regal NPT HS Pipe Tap 1/8 - 27 R

$22.25 NPTR-1/4
1/4"-18 Regal NPT HS Pipe Tap 1/4 - 18 7/16"

$29.45 NPTR-3/8
3/8"-18 Regal NPT HS Pipe Tap 3/8 - 18 37/64"

$46.75 NPTR-1/2
1/2"-14 Regal NPT HS Pipe Tap 1/2 - 14 23/32"

$65.40 NPTR-3/4
3/4"-14 Hanson Whitney NPT HS Pipe Tap 3/4 - 14 59/64"

$99.40 NPTR-1
1"-11 1/2 Hanson Whitney NPT HS Pipe Tap 1 - 11 1/2 1-5/32"

$141.45 NPTR-1-1/4
1 1/4"-11 1/2 Regal NPT HS Pipe Tap 1 1/4 - 11 1/2 1-1/2"

$190.40 NPTR-1-1/2
1 1/2"-11 1/2 Regal NPT HS Pipe Tap 1 1/2 - 11 1/2 1-47/64"

$258.40 NPTR-2
2"-11 1/2 Regal NPT HS Pipe Tap 2 - 11 1/2 2-7/32"

NPT Taper High Speed Round Pipe Dies

High Speed Steel. Round, split, adjustable dies.

For cutting NPT (tapered) pipe threads.

Follow this link to see the corresponding Pipe Taps for these Dies..

Follow this link to see more technical info and dimensions of tqper pipe threads on Wikipedia.

Follow this link to explore our complete offering of taps, dies, and other threading tools.
Quantity Price Model Description Pipe Size Threads per Inch Die O.D.

$9.30 RDPT-1/16-B
1/16-27 NPT 1" OD HS Pipe Die 1/16" NPT 27 1"

$9.30 RDPT-1/8-B
1/8-27 NPT 1" OD HS Pipe Die 1/8" NPT 27 1"

$17.10 RDPT-1/8-C
1/8-27 NPT 1-1/2" OD HS Pipe Die 1/8" NPT 27 1-1/2"

$17.10 RDPT-1/4-C
1/4-18 NPT 1-1/2" OD HS Pipe Die 1/4" NPT 18 1-1/2"

$17.10 RDPT-3/8-C
3/8-18 NPT 1-1/2" OD HS Pipe Die 3/8" NPT 18 1-1/2"

$31.70 RDPT-1/2-D
1/2-14 NPT 2" OD HS Pipe Die 1/2" NPT 14 2"

$31.70 RDPT-3/4-D
3/4-14 NPT 2" OD HS Pipe Die 3/4" NPT 14 2"

$51.00 RDPT-1-E
1"-11 1/2 NPT 2-1/2" OD HS Pipe Die 1" NPT 11-1/2 2-1/2"

$94.00 RDPT-1-1/4--F
1 1/4"-11 1/2 NPT 3" OD HS Pipe Die 1-1/4" NPT 11-1/2 3"

$94.00 RDPT-1-1/2-F
1 1/2"-11 1/2 NPT 3" OD HS Pipe Die 1-1/2" NPT 11-1/2 3"

$216.00 RDPT-2-H
2"-11 1/2 NPT 4" OD HS Pipe Die 2" NPT 11-1/2 4"

$295.00 RDPT-2-1/2-I
2 1/2"-8 NPT 5" OD HS Pipe Die 2-1/2" NPT 8 5"

$295.00 RDPT-3-I
3"-8 NPT 5" OD HS Pipe Die 3" NPT 8 5"

NPT Carbon Steel Hex Dies

Carbon Steel Hex Pipe Dies for National Pipe Taper threads.
For cleaning or repairing existing NPT threads.
Hex shape allows use in tight places.

These dies are meant to be used with a common adjustable wrench.
The dimension across the flats is not designed for any specific holder.

Follow this link to see the corresponding Pipe Taps for these Dies..

Follow this link to see more technical info and dimensions of taper pipe threads on Wikipedia.

Follow this link to explore our complete offering of taps, dies, and other threading tools.
Quantity Price Model Description Size

$4.70 HDPT-1/8
1/8-27 NPT Carbon Steel Hex Die 1/8-27

$5.20 HDPT-1/4
1/4-18 NPT Carbon Steel Hex Die 1/4-18

$7.20 HDPT-3/8
3/8-18 NPT Carbon Steel Hex Die 3/8-18

$9.40 HDPT-1/2
1/2-14 NPT Carbon Steel Hex Die 1/2-14

$12.50 HDPT-3/4
3/4-14 NPT Carbon Steel Hex Die 3/4-14

$24.60 HDPT-1
1"-11 1/2 NPT Carbon Steel Hex Die 1"-11 1/2

$32.70 HDPT-1-1/4
1-1/4"-11 1/2 NPT Carbon Steel Hex Die 1 1/4"-11 1/2

$40.30 HDPT-1-1/2
1-1/2"-11 1/2 NPT Carbon Steel Hex Die 1 1/2"-11 1/2

$88.00 HDPT-2
2"-11 1/2 NPT Carbon Steel Hex Die 2"-11 1/2

$154.00 HDPT-2-1/2
2-1/2"-8 NPT Carbon Steel Hex Die 2 1/2"-8

NPS Straight Thread HS Pipe Taps

Straight Pipe Taps. Ground Threads. High Speed Steel.

For cutting NPS (straight) pipe threads.

Besides use on pipes, NPS threads are frequently found on lamps and lighting fixtures.
You may see them descrined as 1/8 IPS or 1/4 IPS.

The actual size of the thread is larger than the "nominal" size.
For example, 1/16-27 NPS threads are 5/16" (.3125") in diameter.

Follow this link to see the corresponding Pipe Dies for these Taps..

Follow this link to explore our complete offering of taps, dies, and other threading tools.
Quantity Price Model Description Size-Thread Drill Size Thread Diameter

$7.90 NPS-1/16
1/16"-27 NPS HS Straight Pipe Tap 1/16 - 27 -- .3125"

$8.90 NPS-1/8
1/8"-27 NPS HS Straight Pipe Tap 1/8 - 27 S .405"

$9.90 NPS-1/4
1/4"-18 NPS HS Straight Pipe Tap 1/4 - 18 29/64" .54"

$13.50 NPS-3/8
3/8"-18 NPS HS Straight Pipe Tap 3/8 - 18 19/32" .675"

$21.80 NPS-1/2
1/2"-14 NPS HS Straight Pipe Tap 1/2 - 14 47/64" .840"

$31.60 NPS-3/4
3/4"-14 NPS HS Straight Pipe Tap 3/4 - 14 15/16" 1.05"

$48.50 NPS-1
1"-11 1/2 NPS HS Straight Pipe Tap 1 - 11 1/2 1-3/16" 1.315"

$85.50 NPS-1-1/4
1 1/4"-11 1/2 NPS HS Straight Pipe Tap 1 1/4 - 11 1/2 1-33/64" 1.66"

$121.00 NPS-1-1/2
1 1/2"-11 1/2 NPS HS Straight Pipe Tap 1 1/2 - 11 1/2 1-3/4" 1.9"

$162.00 NPS-2
2"-11 1/2 NPS HS Straight Pipe Tap 2 - 11 1/2 2-7/32" 2.375"

$306.00 NPS-2-1/2
2 1/2"-8 NPS HS Straight Pipe Tap 2 1/2 - 8 2-21/32" 2.875"

$471.00 NPS-3
3"-8 NPS HS Straight Pipe Tap 3 - 8 3-9/32" 3.5"

$560.00 NPS-3-1/2
3-1/2"-8 NPS HS Straight Pipe Tap 3-1/2 - 8 - -

NPS Straight Pipe Dies

High Speed Steel. Round, split, adjustable dies.

For cutting NPS (straight) pipe threads.

Besides use on pipes, NPS threads are frequently found on lamps and lighting fixtures.
You may see them descrined as 1/8 IPS or 1/4 IPS.

The actual size of the thread is larger than the "nominal" size.
For example, 1/16-27 NPS threads are 5/16" (.3125") in diameter.

Follow this link to see the corresponding Pipe Taps for these Dies..

Follow this link to explore our complete offering of taps, dies, and other threading tools.
Quantity Price Model Description Pipe Size Threads per Inch Die O.D. Appx. Thread Diam.

$9.30 RDPS-1/16-B
1/16-27 NPS 1" OD HS Pipe Die 1/16" NPS 27 1" .3125"

$9.30 RDPS-1/8-B
1/8-27 NPS 1" OD HS Pipe Die 1/8" NPS 27 1" .405"

$17.10 RDPS-1/8-C
1/8-27 NPS 1-1/2" OD HS Pipe Die 1/8" NPS 27 1-1/2" .405"

$17.10 RDPS-1/4-C
1/4-18 NPS 1-1/2" OD HS Pipe Die 1/4" NPS 18 1-1/2" .54"

$17.10 RDPS-3/8-C
3/8-18 NPS 1-1/2" OD HS Pipe Die 3/8" NPS 18 1-1/2" .675"

$17.10 RDPS-1/2-C
1/2-14 NPS 1-1/2" OD HS Pipe Die 1/2" NPS 14 1-1/2" .840"

$31.70 RDPS-1/2-D
1/2-14 NPS 2" OD HS Pipe Die 1/2" NPS 14 2" .840"

$31.70 RDPS-3/4-D
3/4-14 NPS 2" OD HS Pipe Die 3/4" NPS 14 2" 1.05"

$51.00 RDPS-1-E
1"-11 1/2 NPS 2-1/2" OD HS Pipe Die 1" NPS 11-1/2 2-1/2" 1.315"

$94.00 RDPS-1-1/4-F
1 1/4"-11 1/2 NPS 3" OD HS Pipe Die 1-1/4" NPS 11-1/2 3" 1.66"

$112.00 RDPS-1-1/2-F
1 1/2"-11 1/2 NPS 3" OD Pipe Die 1-1/2" NPS 11-1/2 3" 1.9"

$241.00 RDPS-2-H
2"-11 1/2 NPS 4" OD HS Pipe Die 2" NPS 11-1/2 4" 2.375"

NPT Interrupted Thread HS Pipe Taps

NPT=3/4" per foot taper. Ground Threads. High Speed Steel.
Facilitates chip removal. Recommended for use in soft, ductile materials such as aluminum.
After the lead, every other thread in an interrupted thread pipe tap is removed to minimize the clogging of the threads.

Follow this link to see the corresponding Pipe Dies for these Taps.

Follow this link to see more technical info and dimensions of taper pipe threads on Wikipedia.

Follow this link to explore our complete offering of taps, dies, and other threading tools.
Quantity Price Model Description Size-Thread Drill Size

$10.90 NPTI-1/16
1/16"-27 NPT HS Interrupted Pipe Tap 1/16 - 27 --

$10.90 NPTI-1/8
1/8"-27 NPT HS Interrupted Pipe Tap 1/8 - 27 R

$13.20 NPTI-1/4
1/4"-18 NPT HS Interrupted Pipe Tap 1/4 - 18 7/16"

$17.60 NPTI-3/8
3/8"-18 NPT HS Interrupted Pipe Tap 3/8 - 18 37/64"

$26.70 NPTI-1/2
1/2"-14 NPT HS Interrupted Pipe Tap 1/2 - 14 23/32"

$38.80 NPTI-3/4
3/4"-14 NPT HS Interrupted Pipe Tap 3/4 - 14 59/64"

$49.50 NPTI-1
1"-11 1/2 NPT HS Interrupted Pipe Tap 1 - 11 1/2 1-5/32"

$82.50 NPTI-1-1/4
1 1/4"-11 1/2 NPT HS Inter Pipe Tap 1 1/4 - 11 1/2 1-1/2"

$114.00 NPTI-1-1/2
1 1/2"-11 1/2 NPT HS Inter Pipe Tap 1 1/2 - 11 1/2 1-47/64"

$166.00 NPTI-2
2"-11 1/2 NPT HS Interrupted Pipe Tap 2 - 11 1/2 2-7/32"

Left Hand Carbon Steel NPT Taper Pipe Taps

National Pipe Taper. NPT= 3/4" per foot taper.
Carbon Steel.
Special price, limited to quantity in stock.

Follow this link to explore our complete offering of taps, dies, and other threading tools.
Quantity Price Model Description Size-Thread

$6.75 NPTLHC-1/16
1/16"-27 Left Hand CS NPT Tap (LIMITED QUANTITY) 1/16 - 27

$6.75 NPTLHC-1/8
1/8"-27 Left Hand CS NPT Tap (LAST ONE) 1/8 - 27

$14.00 NPTLHC-1/2
1/2"-14 Left Hand CS NPT Tap (LIMITED QUANTITY) 1/2 - 14

Left Hand High Speed Steel NPT Taper Pipe Taps

National Pipe Taper. NPT= 3/4" per foot taper.
High Speed Steel.
Left Hand Threads

Follow this link to see more technical info and dimensions of taper pipe threads on Wikipedia.

Follow this link to explore our complete offering of taps, dies, and other threading tools.
Quantity Price Model Description Size-Thread Drill Size

$14.10 NPTLH-1/16
1/16"-27 Left Hand High Speed NPT Tap 1/16 - 27 --

$14.10 NPTLH-1/8
1/8"-27 Left Hand High Speed NPT Tap 1/8 - 27 R

$16.80 NPTLH-1/4
1/4"-18 Left Hand High Speed NPT Tap 1/4 - 18 7/16"

$21.70 NPTLH-3/8
3/8"-18 Left Hand High Speed NPT Tap 3/8 - 18 37/64"

$30.40 NPTLH-1/2
1/2"-14 Left Hand High Speed NPT Tap 1/2 - 14 23/32"

$43.50 NPTLH-3/4
3/4"-14 Left Hand High Speed NPT Tap 3/4 - 14 59/64"

$68.00 NPTLH-1
1"-11 1/2 Left Hand High Speed NPT Tap 1 - 11 1/2 1-5/32"

$103.00 NPTLH-1-1/4
1-1/4"-11 1/2 Left Hand High Speed NPT Tap 1-1/4 - 11-1/2 1-1/2"

$134.00 NPTLH-1-1/2
1-1/2"-11 1/2 Left Hand High Speed NPT Tap 1-1/2 - 11-1/2 1-47/64"

$238.00 NPTLH-2
2"-11 1/2 Left Hand High Speed NPT Tap 2 - 11 1/2 2-7/32"

Long NPT HS Pipe Taps

High Speed Steel long taper pipe taps.

Follow this link to see more technical info and dimensions of taper pipe threads on Wikipedia.

Follow this link to explore our complete offering of taps, dies, and other threading tools.
Quantity Price Model Description Size-Thread Length

$17.10 NPTL-1/8-6
1/8"-27 6" Long NPT HS Pipe Tap 1/8 - 27 6"

$19.40 NPTL-1/4-6
1/4"-18 6" Long NPT HS Pipe Tap 1/4 - 18 6"

$22.50 NPTL-3/8-6
3/8"-18 6" Long NPT HS Pipe Tap 3/8 - 18 6"

$29.90 NPTL-1/2-6
1/2"-14 6" Long NPT HS Pipe Tap 1/2 - 14 6"

$41.20 NPTL-3/4-6
3/4"-14 6" Long NPT HS Pipe Tap 3/4 - 14 6"

$53.50 NPTL-1-6
1"-11 1/2 6" Long NPT HS Pipe Tap 1 - 11 1/2 6"

NPT HS Combined Drills and Pipe Taps

Drill and thread holes in a single pass.
For National Pipe Taper threads.

Follow this link to explore our complete offering of taps, dies, and other threading tools.
Quantity Price Model Description Size Length

$39.50 CDPT-1/16
1/16"-27 NPT HSS Combined Drill/Pipe Tap 1/16-27 2 13/16"

$49.50 CDPT-1/8
1/8"-27 NPT HSS Combined Drill/Pipe Tap 1/8-27 2 7/8

$54.80 CDPT-1/4
1/4"-18 NPT HSS Combined Drill/Pipe Tap 1/4-18 3 5/16

$63.00 CDPT-3/8
3/8"-18 NPT HSS Combined Drill/Pipe Tap 3/8-18 3 1/2

$98.00 CDPT-1/2
1/2"-14 NPT HSS Combined Drill/Pipe Tap 1/2-14 4 3/8

$136.00 CDPT-3/4
3/4"-14 NPT HSS Combined Drill/Pipe Tap 3/4-14 4 9/16

$195.00 CDPT-1
1"-11 1/2 NPT HSS Combined Drill/Pipe Tap 1"-11-1/2 5 3/8

Carbon Steel NPT Pipe Taps

NPT (National Pipe Taper)=3/4" per foot taper.
Carbon steel taps are good for general maintenance use, but will not last as long as High Speed Steel taps.

Follow this link to see the corresponding Pipe Dies for these Taps.

Follow this link to see more technical info and dimensions of taper pipe threads on Wikipedia.

Follow this link to explore our complete offering of taps, dies, and other threading tools.
Quantity Price Model Description Size-Thread Drill Size

$3.70 NPTC-1/8
1/8"-27 NPT Carbon Steel Pipe Tap 1/8 - 27 R

$4.10 NPTC-1/4
1/4"-18 NPT Carbon Steel Pipe Tap 1/4 - 18 7/16"

$5.70 NPTC-3/8
3/8"-18 NPT Carbon Steel Pipe Tap 3/8 - 18 37/64"

$7.80 NPTC-1/2
1/2"-14 NPT Carbon Steel Pipe Tap 1/2 - 14 23/32"

$11.30 NPTC-3/4
3/4"-14 NPT Carbon Steel Pipe Tap 3/4 - 14 59/64"

$18.60 NPTC-1
1"-11 1/2 NPT Carbon Steel Pipe Tap 1 - 11 1/2 1-5/32"

$29.70 NPTC-1-1/4
1 1/4"-11 1/2 NPT Carbon Steel Pipe Tap 1 1/4 - 11 1/2 1-1/2"

$41.80 NPTC-1-1/2
1 1/2"-11 1/2 NPT Carbon Steel Pipe Tap 1 1/2 - 11 1/2 1-47/64"

$65.50 NPTC-2
2"-11 1/2 NPT Carbon Steel Pipe Tap 2 - 11 1/2 2-7/32"

Straight Tap Wrenches

Straight-arm tap wrenches.
Straight tap wrenches provide greater force than t-handle tap wrenches.

Follow this link to explore our complete offering of taps, dies, and other threading tools.
Quantity Price Model Description Hand Taps # Size Taps Pipe Taps MM Taps Approx. Length

$4.95 STW-A
1/16" - 1/4" Straight Tap Wrench 1/16" - 1/4" 0-14 - 1 -5mm 7"

$6.90 STW-B
1/16" - 3/8" Straight Tap Wrench 1/16" - 3/8" 4-14 1/16" 3 - 9mm 8"

$8.50 STW-C
5/32" - 1/2" Straight Tap Wrench 5/32" - 1/2" 7-14 1/16-1/8" 4 - 12mm 10-12" (varies)

$12.50 STW-D
3/16" - 3/4" Straight Tap Wrench 3/16" - 3/4" 10-14 1/16 - 1/4" 5 - 18mm 13"

$15.80 STW-E
1/4" - 1-1/8" Straight Tap Wrench 1/4" - 1 1/8" - 1/8 - 1/2" 6 - 28mm 19"

$49.50 STW-G
3/4" - 1 1/2" Straight Tap Wrench 3/4" - 1 1/2" - 3/8 - 1 1/4" 19 - 38mm 35"

$79.00 STW-H
1" - 2 1/2" Straight Tap Wrench 1" - 2 1/2" - 3/4 - 2" 25 -65mm 55"

Hex Die Adapters

Hex Die Adapters for round threading dies.
Convert round dies to hex dies, primarily to enable the use of a wrench on the die.
Great for tight spaces.

A 1" Hex Die Adapter holds 1" Outside Diameter (OD) dies, a HDA-2 holds 2" OD dies, etc.

Follow this link to explore our complete offering of taps, dies, and other threading tools.
Quantity Price Model Description Holds Dies of OD:

$6.00 HDA-13/16
13/16" Hex Die Adapter 13/16"

$7.70 HDA-1
1" Hex Die Adapter 1"

$9.50 HDA-1-1/2
1 1/2" Hex Die Adapter 1 1/2"

$10.70 HDA-2
2" Hex Die Adapter 2"

$16.00 HDA-2-1/2
2 1/2" Hex Die Adapter 2 1/2"

$27.50 HDA-3
3" Hex Die Adapter 3"