Guhring - 1/4-28 UNF 2B/3B Modified Bottoming Spiral Flute Tap - Cobalt, Oxide Finish, 2-1/2" OAL, Right Hand Flute, Right Hand Thread, H5, Series 4409
Item #: 52365699
Brand: Guhring
Model #: 9044095063500
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) | 1/4-28 |
| Chamfer | Modified Bottoming |
| Class of Fit | 2B/3B |
| Thread Limit | H5 |
| Material | Cobalt |
| Finish/Coating | Oxide |
| Thread Direction | Right Hand |
| Flute Direction | Right Hand |
| Through Coolant | NonThrough Coolant |
| Overall Length (Decimal Inch) | 2.5000 |
| Helix Angle | 40 |
| Thread Standard | UNF |
| Oversize | No |
| Thread Length (Decimal Inch) | 0.3540 |
| Flute Type | Fast Spiral |
| Series/List | 4409 |
| Neck Length (Decimal Inch) | 0.8270 |
| Tapping Depth (Decimal Inch) | 1.1810 |
| Shank Diameter (Decimal Inch) | 0.2550 |
| Material Application | Alloy Steel; Alloy Tool Steel; Aluminum Alloy; Case Hardened Steel; Cast Iron; Ductile Iron; Free Cutting Steel; Heat Treated Steel; Malleable Cast Iron; Stainless Steel; Structural Steel; Tool Steel |
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