What thread type is this machine tap designed for?

It cuts 1" tapered American NPTF (National Pipe Taper Fuel) threads with a pitch of 11.5 tpi.

Is this tool suitable for blind or through holes?

You can use this machine tap for both blind and through hole applications.

What shank and drive size does this tap use?

It features a 25 mm shank with a 20 mm square drive.

Does this machine tap have internal coolant holes?

No, this model is not equipped with through-coolant channels.

What material is this tap made of?

It is manufactured from premium HSS-E (HSSE/V3) high-speed steel for long tool life and high precision.

PHANTOM 258403340 HSS-E machine tap DIN 374 NPTF for blind and through-holes 1"-11'5

Name: PHANTOM 258403340 HSS-E machine tap DIN 374 NPTF for blind and through-holes 1"-11'5
Brand: PHANTOM
SKU: 51200846
Price: 255.82 EUR
Availability: PreOrder

Supplier number: PHANTOM 258403340 | EAN 8716563347071

255.82 tax incl.

€211.42 excl. VAT (incl. all environmental contributions)

On order: delivered from 17/10/2026

Ordered before 20:00 - delivered as of 17/10/2026
Free shipping
Delivery by DHL
Delivered from Belgium

✆ Talk to a specialist

Reliable thread cutting for tight seals

Practical benefits

Superior high-speed wear resistance: The durable HSS-E construction maintains sharp cutting edges and delivers consistent performance during demanding operations.
Blind and through-hole versatility: You can tap threads up to 30 mm deep with equal precision across both blind and through holes.
Accurate NPTF conical threads: The 1"-11.5 tpi thread profile creates clean, tight-fitting connections engineered for secure pressure piping systems.

In a nutshell

The right choise for

With the Phantom 25.840 machine tap, you cut precise 1" conical nptf threads with an 11.5 tpi pitch for tight, pressure-resistant connections. Its high-grade hss-e build maintains sharp cutting edges and delivers dependable wear resistance throughout demanding metalworking tasks. This right-hand tap handles both blind and through hole applications with a maximum cutting depth of up to 30 mm. Equipped with a 25 mm shank and a 20 mm square drive, it seats securely in your machine holder so you can work with complete accuracy and control.

Product information FAQ

€255.82

tax incl.

Key features according to our expert

Thread size: 1"
Max. cutting depth: 30
Thread type: NPTF
Material (machine tap): HSS-E
With innercooling: No
Application (machine tap): Blind hole; Through hole
Square size: 20 mm
Shank type: External square
Shank size: 25 mm
Cutting direction: Right
Pitch: 11,5 tpi

Product Description:

Phantom HSS-E Machine Tap DIN 374 NPTF
DIN 374, 60°, taper 1:16, reduced shank, for through and blind holes, lead 2,5 chamfer

All Features

Thread size: 1"
Max. cutting depth: 30
Thread type: NPTF
Material (machine tap): HSS-E
With innercooling: No
Application (machine tap): Blind hole; Through hole
Square size: 20 mm
Shank type: External square
Shank size: 25 mm
Cutting direction: Right
Pitch: 11,5 tpi
Shank ø (d2): 25 mm
Pre-drilling diameter (ø): 29 mm
Total length (l1): 160 mm
Tool material: HSS-E
Flute length (l2): 30 mm
Coolant feed: No
Thread diameter (d1): NPTF 1
Square wide (sw): 20 mm
Hole type: for blind and through holes
Surface: Bright
Shape: C
Norm: DIN 374
Pitch-inch (tpi): 11,5 Threads per inch

Brand PHANTOM
51200846
EAN 8716563347071
Supplier number PHANTOM 258403340

Frequently asked questions about this product

Answered by specialists

What thread type is this machine tap designed for?: It cuts 1" tapered American NPTF (National Pipe Taper Fuel) threads with a pitch of 11.5 tpi.
Is this tool suitable for blind or through holes?: You can use this machine tap for both blind and through hole applications.
What shank and drive size does this tap use?: It features a 25 mm shank with a 20 mm square drive.
Does this machine tap have internal coolant holes?: No, this model is not equipped with through-coolant channels.
What material is this tap made of?: It is manufactured from premium HSS-E (HSSE/V3) high-speed steel for long tool life and high precision.