Metric Tap & Die Set 8/12/20Pc M3-M12 Thread Cutting Kit

Metric Tap & Die Set – Precision Thread Cutting for Every Project

Whether you're a seasoned machinist, a passionate DIYer, or a hobbyist tackling metalworking projects at home, this Multifunction Metric Tap and Die Set is built to handle it all. Available in 8, 12, or 20-piece configurations, this kit covers M3 through M12 thread sizes — giving you everything you need to cut, repair, and clean internal and external threads with professional-grade accuracy.

Crafted from durable carbide alloy steel, each tap and die is engineered for long-lasting performance across steel, aluminum, copper, and other common metals. The straight and taper tap options let you tackle through-holes and blind holes alike, making this one of the most versatile threading kits available.

Key Features

• Multiple Set Sizes: Choose from 8, 12, or 20-piece kits to match your project needs and budget
• Wide Thread Range: Covers M3, M4, M5, M6, M7, M8, M10, and M12 metric thread sizes
• Carbide Alloy Steel Construction: High hardness and wear resistance for clean, precise cuts every time
• Both Tap & Die Included: Cut internal threads (taps) and external threads (dies) with one complete kit
• Straight & Taper Taps: Versatile tap styles to handle a wide range of hole types and materials
• Hand Tool Compatible: Designed for use with standard hand tap wrenches and die stocks
• Compact & Organized: Tidy storage case keeps all pieces secure and easy to find
• Made in China

What's Included

• 8, 12, or 20 metric taps and dies (M3–M12 depending on set)
• Compatible tap wrench handle
• Storage case for organization and portability

Specifications

Who Is This For?

This tap and die set is ideal for:

• Mechanics and auto repair professionals needing to restore stripped bolts and threads
• Metalworkers and machinists cutting new threads in metal workpieces
• DIY enthusiasts building or repairing machinery, furniture hardware, or equipment
• Workshop hobbyists who want a reliable, all-in-one threading solution

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For more information on metalworking thread standards, visit the NCBI Engineering Reference or explore CDC NIOSH Metalworking Safety Guidelines for safe tool handling practices.

Frequently Asked Questions

Q: What thread sizes are included in this metric tap and die set?

A: Depending on the set size you choose (8, 12, or 20 pieces), this kit covers metric thread sizes ranging from M3 to M12. The larger 20-piece set provides the most complete range for professional and workshop use.

Q: What materials can this tap and die set be used on?

A: The carbide alloy steel taps and dies are suitable for threading a variety of materials including mild steel, aluminum, copper, brass, and other soft to medium-hardness metals. Always use cutting oil for best results and longer tool life.

Q: Is this a hand tool set or does it require a machine?

A: This metric tap and die set is designed for use with standard hand tap wrenches and die stocks — no machine required. It's perfect for manual threading tasks in the field, garage, or workshop.

Q: What is the difference between a straight tap and a taper tap?

A: A taper tap has a gradual lead that makes it easier to start threading in a new hole, while a straight (plug) tap is used to cut threads deeper into a hole or in through-holes. Having both types in one kit gives you maximum versatility.

Q: Does the set come with a storage case?

A: Yes, the set includes a compact storage case to keep all your taps and dies organized and protected from damage when not in use.