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OSG Threading Tap NPSF A-Spiral Flute - FORME Powder Metal Right Hand -TiCN Coated - Blind Holes DIN5156 - 1/4 x 18

OSG Threading Tap NPSF A-Spiral Flute - FORME Powder Metal Right Hand -TiCN Coated - Blind Holes DIN5156 - 1/4 x 18

SKU:OSG-48203887
The OSG Threading Tap NPSF A-Spiral Flute is a precision tapping tool designed to form National Pipe Straight Fuel threads in blind holes. Built for professional machinists and production environm... Read more ↓
Material Compatibility
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M
N
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Specification
Size1/4
Pitch18
Overall Length100
Threading Length22
Shank Diameter11
Square9
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£90.85
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The OSG Threading Tap NPSF A-Spiral Flute is a precision tapping tool designed to form National Pipe Straight Fuel threads in blind holes. Built for professional machinists and production environments, it combines durability with consistent, high‑quality thread results in tight cavities.

  • Thread type: NPSF (National Pipe Straight Fuel) threads for reliable, gas- and liquid-tight connections in blind-hole applications.
  • Flute design: A‑Spiral flute enhances chip evacuation and reduces clogging during deeper taps, promoting smoother cutting.
  • Material: FORME powder metal construction delivers exceptional wear resistance and longevity under demanding cutting conditions.
  • Coating: TiCN coating provides improved heat resistance and lower friction, extending tool life and enabling stable cutting speeds.
  • Cutting direction: Right-hand tap compatible with standard machining setups and conventional threading sequences.
  • Standards: DIN5156 compliant to ensure dimensional accuracy and easy interchangeability with similar DIN-spec taps.
  • Size: 1/4 x 18 for common NPSF blind-hole applications and precise fit in piping-related assemblies.

Designed to deliver dependable performance in metalworking workflows, this tap reduces downtime through extended tool life and better finish quality. The combination of FORME powder metal, TiCN coating, and the A‑spiral flute design translates to efficient material removal, cleaner threads, and fewer reworks in production environments where NPSF threads in blind holes are required. Ideal for hydraulic fittings, fuel system components, and other assemblies that demand precise, durable NPSF threading.

Size 1/4
Pitch 18
Overall Length 100
Threading Length 22
Shank Diameter 11
Square 9
Flutes 3
DIN 5156
Thread Direction Right Hand
Substrate Powder Metal
Coating TiCN
Style Spiral Flute
Form NSPF

What time are Protool open?

We are open Monday to Friday between 8:30am and 5pm.

Do you offer Free Next Day delivery?

Yes! We offer Free Next Day delivery via Royal Mail Tracked 24 on all orders over £50 ex VAT*. We also offer Free DPD Local Next Day delivery on all orders over £100 ex VAT*.

We also offer the following:

  • Royal Mail Tracked 24 — £5.90 (FREE on orders over £50 ex VAT*). Order before 4:30pm for next day delivery. No signature required.
  • DPD Local Next Day — £8.00 (FREE on orders over £100 ex VAT*). Standard next day delivery to UK mainland addresses.
  • Royal Mail Special Delivery — £12.50. Guaranteed delivery before 1pm the next working day.
  • DPD Saturday Delivery — £25.00. Must be ordered on Friday before 4pm. Pre-12pm delivery.

For delivery to Scottish Highlands & Islands, Northern Ireland, Republic of Ireland, or overseas locations, additional charges apply. Please see our delivery page for full details, or call us on 01732 887 334.

*T's & C's and exclusions apply. Please see our delivery page for more information on all our services.

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Full Range: OSG Threading Taps NPSF A-Spiral Flute - FORME Powder Metal Right Hand -TiCN Coated - Blind Holes

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You are viewing OSG-48203887. Click any other SKU to view its full details.

Product SKUSizePitchOverall LengthShank DiameterFlutesDINPriceStock Order
OSG-48203885 1/162790635156£84.75 1-2 days
OSG-48203886 1/82790735156£67.67 1-2 days
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OSG-48203888 3/8181001245156£114.57 1-2 days
OSG-48203889 1/2141251645156£159.35 1-2 days
OSG-48203890 3/4141402045156£259.14 1-2 days
OSG-48203891 111.51602545156£367.61 1-2 days