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Taps and dies

(373 products)

Where metal precision meets the art of perfect threading. Our collection of professional taps and dies combines the excellence of Greenfield, Morse Cutting Tool, and Procut to transform every hole into a flawless industrial connection. From the seasoned mechanic in Montreal to the passionate DIY enthusiast in Quebec City, discover the tools that carve millimeter-precise threads in steel with the rigor your trade demands. Because in Canada, a strong thread is non-negotiable.

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A complete guide to choosing your professional taps and dies

What are a tap and a die and why are they essential in your workshop?

A tap creates internal threads (female threads) in a pre-drilled hole, while a die forms external threads (male threads) on cylindrical rods. These mechanical threading tools form the basis of all industrial bolted assemblies, enabling removable and adjustable connections without welding.

In Quebec workshops, where agricultural machinery repair is combined with the assembly of metal structures, having professional-grade Canadian taps and dies makes the difference between approximate work and precision to the hundredth of a millimeter.

The Greenfield and Morse Cutting Tool sets we offer cover the metric (M3 to M24) and imperial (1/4" to 1") threads used daily. According to industry standards, a properly cut thread using calibrated tools can withstand up to 85% of the base material's tensile strength, ensuring reliable connections even under significant dynamic loads.

How to choose the right type of tap for your industrial threading application?

Taps come in three main types, depending on their cutting geometry. The roughing tap (or No. 1 tap) has a progressive tapered entry with 7 to 9 threads, ideal for starting threads in soft materials like aluminum. The intermediate tap (No. 2) with 3 to 5 cutting threads ensures the transition, while the finishing tap (No. 3) with a short entry (1-2 threads) precisely completes the profile.

For blind holes, common in industrial mechanics, choose taps with a helical flute that evacuate chips upwards, preventing fatal clogging. Through holes are better suited to taps with a straight flute, where chips move forwards.

The coating also plays a crucial role: our Procut taps with TiN (titanium nitride) treatment offer a surface hardness of 2400 HV and reduce the coefficient of friction by 40%, allowing threading of steels with a tensile strength of up to 1200 N/mm². For stainless steel and refractory alloys, choose HSS-E cobalt taps, which maintain their cutting edge up to 600°C.

What technological innovations distinguish modern professional sectors?

Modern dies from brands like Greenfield incorporate cutting geometries optimized through numerical simulation to distribute the cutting force across multiple edges simultaneously. This multi-tooth design reduces the required force by 30% compared to older one-piece dies, decreasing operator fatigue and improving thread straightness on long rods.

The adjustable hexagonal dies we offer provide micrometric adjustment of the thread diameter via a clamping screw, allowing for compensation of progressive wear and the creation of tight or loose threads according to the required assembly tolerances (classes 6g, 4h, etc.). This flexibility is particularly valued in industrial maintenance where replacement parts sometimes need to fit slightly deformed threads.

Gearwrench bidirectional ratchet die holders represent a major ergonomic advancement: their 72-tooth mechanism requires only 5° of travel, allowing threading in confined spaces where traditional tap wrenches get stuck. Productivity increases by 50% on mobile workshops or construction sites.

In what professional situations do your taps and threading tools really make a difference?

In automotive and heavy machinery mechanics, repairing cracked engine blocks requires precision helical taps to recreate spark plug threads (M14x1.25 or M18x1.5) without stripping in the porous aluminum casting. Our Quebec tap die sets include these critical dimensions with the corresponding pilot drills for drilling to 10.2mm or 15.5mm, as required.

Metal fabrication shops use dies daily to create custom threaded rods, avoiding the costs of sourcing standard lengths. With an M12x1.75 die and 12mm cold-rolled round rod, you can instantly produce bolts with the exact dimensions required for your welded assemblies.

In the plumbing and HVAC industry, NPT (National Pipe Thread) tapered taps create the leak-proof threads essential for pressurized pipe connections. Our 1/2" NPT and 3/4" NPT Morse taps cover the most common diameters in industrial hydraulic and pneumatic systems, with the characteristic 60° angle ensuring a metal-to-metal seal.

What accessories and maintenance practices prolong the life of your taps and dies?

The consistent use of appropriate cutting fluids multiplies the lifespan of your taps by 3 to 4 times. For mild steel, a soluble oil is sufficient; stainless steel requires high-pressure sulfur oils; aluminum is ideally worked with kerosene or light oils that prevent chip sticking. Our specialized tapping lubricants are formulated for each material family.

Immediate cleaning with a degreasing solvent after use removes metallic residues that cause oxidation. Store your taps in individual cases or foam holders to prevent damage from sharp edges – a chipped edge will tear the thread instead of forming it. The Greenfield and Procut sets we offer include these protective cases.

Regular inspection with a thread gauge allows for the detection of wear before it compromises quality. A worn tap creates undersized threads that can loosen under vibration. Always replace any tap showing visible wear on the first cutting teeth. For critical applications in aerospace or pressure vessels, traceability and preventive replacement according to duty cycles are mandatory.
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We answer your questions about taps and dies

What is the difference between metric and imperial taps and which one should I choose?

Metric taps use the international system with designations like M6x1.0 (6mm diameter, 1mm pitch), while imperial taps follow the UNC/UNF system with measurements in inches like 1/4"-20 (1/4" diameter, 20 threads per inch).

Choose according to your equipment:

  • Modern European and Asian machinery → Metric
  • American equipment and North American vehicles → Imperial
  • Multi-purpose workshops → Complete set of both systems

In Quebec, both standards coexist. Our Greenfield and Morse sets include both systems for maximum versatility. Most professional mechanics maintain stock of both Greenfield

How much does a professional quality tap and die set cost?

Typical price ranges:

  • Basic set (20-40 pieces): $80 to $150
  • Professional set (40-75 pieces): $150 to $350
  • Complete industrial set (100+ pieces): $350 to $800

Greenfield and Procut brands offer the best quality-price ratio for intensive use, while Morse Cutting Tool represents the high end for critical applications. A 45-piece metric and imperial set covers 90% of a general workshop's needs.

Recommended investment: Prioritize quality over quantity. Three well-maintained premium taps outperform twenty discount taps that break on first use in hardened Procut Greenfield

How do I avoid breaking a tap during threading?

Golden anti-breakage rules:

  1. Correct pilot hole: Use the exact recommended drill bit (tap diameter - pitch). A hole that's too small generates excessive stress.
  2. Abundant lubrication: Apply cutting fluid before each pass. Stainless steel requires continuous lubrication.
  3. Frequent reverse rotation: Turn 1/2 turn forward, 1/4 turn backward to break chips. Never prolonged continuous rotation.
  4. Perpendicular alignment: The tap must remain at exactly 90° to the surface. Use a guide or self-centering chuck for deep holes.
  5. Appropriate material: Standard HSS taps cannot thread steels >1000 N/mm². Use cobalt taps for hard materials.

If breakage occurs despite precautions, consult our collection of specialized extractors rather than risk enlarging the hole.

Can the same taps be used for aluminum and stainless steel?

Technically yes, but performance and lifespan will be compromised. Each material presents specific challenges:

Aluminum:

  • Soft metal that sticks to edges
  • Requires taps with polished and wide flutes
  • Light lubrication (kerosene, WD-40)
  • High cutting speed possible

Stainless steel:

  • Rapid work hardening
  • Requires taps with reinforced geometry
  • High-pressure lubrication essential
  • Reduced speed (30% slower than mild steel)
  • Cobalt HSS-E taps recommended

For occasional use, a quality standard HSS tap like Greenfield works in both. For regular production, invest in material-specific taps to optimize results and longevity.https://www.equipementpolar.com/en/collections/greenfield

How do I properly maintain and store my taps and dies?

After each use:

  • Immediate cleaning with wire brush and solvent
  • Complete drying to prevent oxidation
  • Application of thin protective oil coating

Optimal storage:

  • Individual storage in cells or foam blocks
  • Never loose (risk of edge chipping)
  • Dry environment with dehumidifier if possible
  • Clear identification (diameter, pitch, material)

Regular inspection:

  • Visual check of cutting edges
  • Test with thread gauge to detect wear
  • Systematic elimination of damaged taps

The Greenfield and Morse sets we sell include molded storage supports that protect each tool individually. A well-maintained tap lasts 5 to 10 years in moderate professional Greenfield

What warranty do you offer on professional taps and dies?

Warranties vary by manufacturer, and Équipement Polar fully respects each brand's policies:

Greenfield & Morse Cutting Tool: Limited warranty against manufacturing defects (material, hardening, geometry). Replacement if premature failure under normal usage conditions.

Procut & Gearwrench: Similar warranty with simplified return procedure for professionals.

Important to note:

  • Breakage from incorrect use is not covered
  • Normal wear is not a defect
  • Proof of purchase must be retained

To know the exact warranty terms applicable to your purchase, consult the detailed information on our website or contact our team who will clarify the specific terms for each product line.

Technical support included: Our advisors guide you on optimal selection and use to minimize probleme. Greenfield

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