Walter-Prototyp - 3/8-16 UNC 3 Flute 3B Modified Bottoming Spiral Flute Tap - Cobalt, Oxide Finish, 2-15/16" OAL, Right Hand Flute, Right Hand Thread, Series A22503
Item #: 71285282
Brand: Walter-Prototyp
Model #: 5080177
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.
Oxide, also known as black oxide or steam oxide, is a surface treatment that prevents chip building, galling and welding on the workpiece. It is commonly used on low carbons, stainless steel and ferrous metals.
Fast Spiral Flutes with 40-53 degree angles are suitable for ductile materials like aluminum and copper; medium to high carbon steels and free machining stainless steels.
| Product Specifications | |
|---|---|
| Thread Size (Inch) | 3/8-16 |
| Chamfer | Modified Bottoming |
| Class of Fit | 3B |
| Number of Flutes | 3 |
| Material | Cobalt |
| Finish/Coating | Oxide |
| Thread Direction | Right Hand |
| Flute Direction | Right Hand |
| Through Coolant | NonThrough Coolant |
| Overall Length (Decimal Inch) | 2.9375 |
| Overall Length (Inch) | 2-15/16 |
| Overall Length (mm) | 74.61 |
| Helix Angle | 40 |
| Thread Standard | UNC |
| Material Grade | M35 |
| Oversize | No |
| Thread Length (Decimal Inch) | 0.7480 |
| Thread Length (mm) | 19.00 |
| Flute Type | Fast Spiral |
| Series/List | A22503 |
| Neck Length (Decimal Inch) | 0.6500 |
| Tapping Depth (Decimal Inch) | 1.3980 |
| Tapping Depth (mm) | 35.51 |
| Shank Diameter (Decimal Inch) | 0.3810 |
| Shank Diameter (mm) | 9.68 |
| Square Length (Inch) | 7/16 |
| Material Application | Cast Steel; Gray Cast Iron; Malleable Cast Iron; Spheroidal Cast Iron; Stainless Steel; Steel; Vermicular Cast Iron |
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