Tap Selection Guide

The Right Tap, Matched to Your Material

Dormer Pramet taps — straight flute, spiral point, spiral flute and the colour-coded Shark range — stocked and shipped next business day, right across Canada, priced in CAD.

Shop Shark taps by material Browse by tap style

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Select by Material — Shark Range

The Shark range is built for CNC and machine tapping, colour-coded to the workpiece material with the coating and edge prep matched to how that metal cuts. Pick your material and the tap is already optimised for it.

Red Shark Alloy steel

CNC / machine

High-performance CNC tapping in alloy steels. TiAlN top coat, material-specific edge prep, HSS-E PM.

Spiral point

E811 UNC
E911 UNF
E627 M
E767 MF

Spiral flute

E810 UNC
E910 UNF
E626 M
E766 MF

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Yellow Shark Carbon & low-alloy steel

CNC / machine

CNC tapping of structural, plain-carbon and low-alloy steels — the everyday machine-shop workhorse. TiAlN top coat, HSS-E PM.

Spiral point

E809 UNC
E909 UNF
E625 M
E765 MF

Spiral flute

E808 UNC
E908 UNF
E624 M
E764 MF

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Blue Shark Stainless steel

CNC / machine

Engineered for CNC tapping of stainless. Super-B coating and edge prep tuned for work-hardening. HSS-E PM.

Spiral point

E813 UNC
E913 UNF
E629 M
E769 MF

Spiral flute

E812 UNC
E912 UNF
E628 M
E768 MF

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White Shark Cast iron

CNC / machine

For CNC tapping of grey and ductile cast iron. TiAlN top coat, HSS-E PM, with thru-coolant bottoming options.

Straight flute, semi-bottoming

E814 UNC
E914 UNF
E630 M
E770 MF

Thru-coolant, full bottoming

E815 UNC
E915 UNF
E631 M
E771 MF

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Black Shark High-strength steel & super alloys

CNC / machine

For CNC tapping of high-strength steels, titanium and nickel-based super alloys. TiAlN top coat, HSS-E PM.

Spiral point

E816 UNC
E916 UNF
E817 M
E917 MF

Spiral flute

E805 UNC
E905 UNF
E806 M

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Green Shark Non-ferrous

CNC / machine

For CNC tapping of aluminium, brass and copper. To DIN 371/376, HSS-E PM, in bright and Super-B finishes.

Spiral point

E471 M bright
E472 M Super-B

Spiral flute

E473 M bright
E474 M Super-B

View Green Shark taps

View all Shark taps

Select by Tap Style

Know the geometry you need? Jump straight to it. Each series lists its part codes — tap any code to see live stock and pricing, or open the full collection.

Straight Flute

Hand & machine

The classic hand-tap geometry, also machine-usable. Bright HSS in taper (NO1), plug (NO2) and semi-bottoming (NO3) chamfers; sets (NO6) include all three.

E061 UNC/M/MF
E071 UNF
E062 LH
E067 STI
E068 Pulley

Shop straight flute

Spiral Point

CNC / machine

Through-hole machine tapping. "Gun" taps push chips ahead of the cut — strong and fast. HSS-E PM, ANSI, bright or steam oxide.

E025 UNC
E026 UNC ox
E035 UNF
E036 UNF ox
E005 M
E006 M ox
E016 MF ox

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Spiral Flute

CNC / machine

Blind-hole machine tapping. Flutes pull chips back out of the hole. HSS-E PM, ANSI, bright or steam oxide.

E027 UNC
E028 UNC ox
E037 UNF
E038 UNF ox
E007 M
E008 M ox
E018 MF ox

Shop spiral flute

Multi-Application

CNC / machine

One tap across many materials. TiCN coated, three-radii flute profile, modified edge prep. HSS-E PM, DIN/ANSI.

E697 — spiral point (plug)

E697 UNC / UNF / M / MF

E698 — spiral flute

E698 UNC / UNF / M / MF

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Shark Form

CNC / machine

Chipless forming taps for CNC. Advanced lobe geometry and oil grooves cold-form a stronger thread, no chips to clear. TiN coated, HSS-E, DIN/ANSI.

E894 UNC (2BX) / UNF (2BX) / M (6HX)

Shop Shark Form

Special Purpose

Hand & machine

Pipe and insert threads. NPT/NPTF pipe taps and STI taps for threaded inserts. NPTF, NPSF & NPSM also available.

NPT taps (ANSI)

E710 bright
E711 interrupted
E721 TiN
E714 PM machine
E653 drill-tap

STI taps (ISO, metric)

E620 straight flute
E621 spiral flute

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Quick Reference

Which geometry?

Through hole	Spiral point. Chips clear ahead of the tap, out the bottom.
Blind hole	Spiral flute. Chips pull back up and out the top.
General / hand	Straight flute. Versatile across most short-chipping work.
Ductile metal, max strength	Shark Form. Forms the thread cold — no chips at all.

Chamfer lengths

NO1	Taper. 7–10 thread lead-in. Easiest start, best for hand tapping and tough materials.
NO2	Plug. 3–5 thread lead-in. The general-purpose all-rounder.
NO3	Bottoming. 1.5–2 thread lead-in. Threads close to the bottom of a blind hole.

Can't find the thread?

If it's in the Dormer Pramet range, we can get it. Tell us the size, pitch and material and we'll source the right tap and confirm lead time.

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