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Straight Pipe Taps and Dies

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"
Out of stock
$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"

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"

Die Stocks For Adjustable Round Split Dies

Die Stocks for holding round threading dies.
Straight-arm die stocks for manual threading.

A 1" Die Stock holds 1" Outside Diameter (OD) dies, a DS-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: Approx. Length:

$3.90 DS-5/8
5/8" Die Stock 5/8" 5.5"

$3.90 DS-13/16
13/16" Die Stock 13/16" 6.25"

$4.90 DS-1
1" Die Stock 1" 8.6"

$7.00 DS-1-1/2
1-1/2" Die Stock 1 1/2" 12"

$9.50 DS-2
2" Die Stock 2" 19.5"

$18.50 DS-2-1/2
2-1/2" Die Stock 2 1/2" 19"

$24.50 DS-3
3" Die Stock 3" 21.75"

$47.00 DS-4
4" Die Stock 4" 29.25"

$93.00 DS-5
5" Die Stock 5" 33"