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NPS Straight Pipe Dies

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 HSS Pipe Die 0505-0200 1/16" NPS 27 1" .3125"

$9.30 RDPS-1/8-B
1/8-27 NPS 1" OD HSS Pipe Die 0505-0205 1/8" NPS 27 1" .405"

$17.10 RDPS-1/8-C
1/8-27 NPS 1-1/2" OD HSS Pipe Die 0505-0300 1/8" NPS 27 1-1/2" .405"

$17.10 RDPS-1/4-C
1/4-18 NPS 1-1/2" OD HSS Pipe Die 0505-0305 1/4" NPS 18 1-1/2" .54"

$17.10 RDPS-3/8-C
3/8-18 NPS 1-1/2" OD HSS Pipe Die 0505-0310 3/8" NPS 18 1-1/2" .675"

$19.10 RDPS-1/2-C
1/2-14 NPS 1-1/2" OD HSS Pipe Die 0505-0315 1/2" NPS 14 1-1/2" .840"

$31.70 RDPS-1/2-D
1/2-14 NPS 2" OD HSS Pipe Die 0505-0360 1/2" NPS 14 2" .840"

$31.70 RDPS-3/4-D
3/4-14 NPS 2" OD HSS Pipe Die 0505-0365 3/4" NPS 14 2" 1.05"

$51.00 RDPS-1-E
1"-11 1/2 NPS 2-1/2" OD HSS Pipe Die 0505-0405 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 HSS Pipe Die 0505-0500 1-1/4" NPS 11-1/2 3" 1.66"
Out of stock
$112.00 RDPS-1-1/2-F
1 1/2"-11 1/2 NPS 3" OD Pipe Die 0505-0505 1-1/2" NPS 11-1/2 3" 1.9"

$241.00 RDPS-2-H
2"-11 1/2 NPS 4" OD HSS Pipe Die 0505-0560 2" NPS 11-1/2 4" 2.375"