OSG - 1/4-28 UNF 3B 3 Flute Bright Finish Cobalt Straight Flute Machine Tap - Plug, Right Hand Thread, 2-1/2" OAL, 1" Thread Length, H3 Limit, Oversize
Item #: 70838602
Brand: OSG
Model #: 1745600
Exact Tooling IR#: 04
Features and Benefits
Plug chamfers are the most commonly used chamfer and designed for efficiently threading through and blind holes. They have 3 to 5 threads.
Cobalt is harder than high speed steel and provides better wear resistance. It is commonly used on high tensile alloys.
Bright provides a smooth, polished finish on the tool. It increases chip flow in softer materials such as aluminum, wood and plastic.
| Product Specifications | |
|---|---|
| Tap Type | Machine Tap |
| Thread Size (Inch) | 1/4-28 |
| Class of Fit | 3B |
| Thread Limit | H3 |
| Number of Flutes | 3 |
| Chamfer | Plug |
| Material | Cobalt |
| Finish/Coating | Bright |
| Thread Direction | Right Hand |
| Through Coolant | NonThrough Coolant |
| Thread Standard | UNF |
| Overall Length (Inch) | 2-1/2 |
| Oversize | No |
| Series/List | 305 |
| Thread Length (Inch) | 1 |
| Shank Diameter (Decimal Inch) | 0.2550 |
| Square Size (Decimal Inch) | 0.1910 |
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