Walter-Prototyp - #12-28 UNF 3 Flute 3B Modified Bottoming Spiral Flute Tap - Cobalt, Nitride Finish, 2-3/8" OAL, Right Hand Flute, Right Hand Thread, Series A23406
Item #: 71285555
Brand: Walter-Prototyp
Model #: 5080752
Exact Tooling IR#: 04
Features and Benefits
Modified bottoming chamfers are similar to bottoming chamfers, but they are longer and have more teeth. They are used for threading blind holes and have 2 to 2-1/2 threads.
Cobalt is harder than high speed steel and provides better wear resistance. It is commonly used on high tensile alloys.
Nitride is a thin, hard-shell coating that supports surface hardness of the tool. It is commonly used where abrasive or wearing conditions exist.
Slow Spiral Flutes with 8-20 degree angles are used for tough materials like high nickel alloys, titanium and some series of stainless steels.
| Product Specifications | |
|---|---|
| Thread Size (Inch) | #12-28 |
| Chamfer | Modified Bottoming |
| Class of Fit | 3B |
| Number of Flutes | 3 |
| Material | Cobalt |
| Finish/Coating | Nitride |
| Thread Direction | Right Hand |
| Flute Direction | Right Hand |
| Through Coolant | NonThrough Coolant |
| Overall Length (Decimal Inch) | 2.3750 |
| Overall Length (Inch) | 2-3/8 |
| Overall Length (mm) | 60.33 |
| Helix Angle | 15 |
| Thread Standard | UNF |
| Material Grade | M35 |
| Oversize | No |
| Thread Length (Decimal Inch) | 0.7870 |
| Thread Length (mm) | 19.99 |
| Flute Type | Slow Spiral |
| Series/List | A23406 |
| Shank Diameter (Decimal Inch) | 0.2200 |
| Shank Diameter (mm) | 5.59 |
| Square Length (Inch) | 9/32 |
| Material Application | Aluminum; Cast Steel; Cobalt Alloys; Iron Alloys; Nickel Alloys; Non-Ferrous Metals; Steel; Titanium; Titanium Alloys |