CoilThread STI Taps
CoilThread® STI (Screw Thread Inserts) Taps are designed specifically to create internal threads that will accommodate a CoilThread® insert. CoilThread® Taps can be used in a range of materials including aluminium, magnesium, steel, plastics and other free machining materials. CoilThread® Taps are manufactured from High Speed Steel for durability and prolonged tooling life.
Features & Benefits
- STI Taps can be used for both Tangless® and Tanged CoilThread® inserts.
- Available in 3B and 2B (Unified) or 4H and 5H (Metric) Class of Fit.
- Available for a full range of Unified and Metric thread sizes.
- Lower cost than similar taps from competitors.
We offer four STI tap styles for various applications:
Plug Style
(4-Thread Chamfer)
Easy starting for through-holes and blind holes.
Bottoming Style
(2-Thread Chamfer)
Ideal for blind holes that are drilled to a minimum depth.
Spiral Pointed Plug
(4-Thread Chamfer)
Free-cutting for use in long through-holes and in blind holes with chip clearance.
Spiral Flute Bottoming
(2-Thread Chamfer)
Designed to pull chips out of deep or blind holes in soft materials
Part Numbers
Example of an STI Taps part number:
CT C - 02 SRP - H1
1 2 3 4 5
1 Tool Type |
2 Thread Designation |
3 Size Designation |
4 Style / Type |
5 Class of Fit |
---|---|---|---|---|
CT - CoilThread® Tap (STI) | C - Unified Coarse F - Unified Fine M - Metric |
--- | SRP - Standard Regular Plug SRB - Standard Regular Bottoming SPP - Spiral Point Plug SFB - Spiral Flute Bottoming |
--- |
Tangless® or Tanged | Tool | Type of Tool | Metric | Size | Free Running or Locking | |
Blank= Tanged | CT |
10 |
Insertion Tool | M | 2.5-12 | F= Free Running |
2= Tangless® | L= Locking |
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