Metric Thread Plug Tap is a tool used to cut internal threads in a pre-drilled hole, conforming to the ISO metric thread standard. The "plug" designation refers to its chamfer type, typically featuring 3 to 5 tapered threads at the tip, making it suitable for general-purpose threading in both through and blind holes.
Product Data
Feature
Specification
Thread Standard
ISO Metric (coarse and fine pitches)
Thread Angle
60°
Chamfer Type
Plug (3–5 threads chamfered)
Flute Type
Straight or Spiral (depending on application)
Material
High-Speed Steel (HSS), HSS-E (Cobalt), or Carbide
Coating/Finish
Bright, Black Oxide, Titanium Nitride (TiN), or Steam Tempered
Tolerance Class
6H (standard fit)
Thread Direction
Right-hand threads
Applications
General-purpose threading in materials like steel, aluminum, brass, and plastics
Standards
ISO 529, DIN 374
Typical Sizes
M1 to M68
Tap Drill Size
Varies by thread size (e.g., 17.5mm drill for M20x2.5 tap)
Number of Flutes
Typically 3 or 4
Overall Length
Varies by size (e.g., 112mm for M20 tap)
Thread Length
Varies by size (e.g., 32mm for M20 tap)
Shank Diameter
Varies by size (e.g., 14mm for M20 tap)
Square Size
Varies by size (e.g., 11.2mm for M20 tap)
Applications
Through-Hole Threading: Ideal for creating threads in holes that go entirely through the material, allowing easy chip evacuation and full thread formation.
Blind Hole Threading:Suitable for threading holes that do not go all the way through the material, stopping short of the bottom.
General-Purpose Threading: Commonly used in various materials like steel, aluminum, brass, and plastics for creating standard threads.
Maintenance and Repair:Useful for cleaning or rethreading existing threads in maintenance tasks.
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