OSG - 1/4-20 UNC, H2, 3 Flutes, Plug Chamfer, Oxide Finish, High Speed Steel Spiral Point STI Tap - 2-23/32" OAL, 0.318" Shank Diam, 1-1/8" Thread Length, 0.238" Square Size, 3B Class of Fit, Series 301
Item #: 49144462
Brand: OSG
Model #: 30100701
Exact Tooling IR#: 04
Features and Benefits
Plug chamfers are the most commonly used chamfer and are designed for efficiently threading through and blind holes. They have 3 to 5 threads.
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.
| Product Specifications | |
|---|---|
| Thread Size (Inch) | 1/4-20 |
| Class of Fit | 3B |
| Thread Limit | H2 |
| Number of Flutes | 3 |
| Chamfer | Plug |
| Finish/Coating | Oxide |
| Overall Length (Inch) | 2-23/32 |
| Thread Standard | UNC |
| Material | High Speed Steel |
| Thread Length (Inch) | 1-1/8 |
| Shank Diameter (Decimal Inch) | 0.3180 |
| Square Size (Decimal Inch) | 0.2380 |
| Series/List | 301 |
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