OSG - #8-32 UNC 3 Flute H3 Oxide Finish Vanadium High Speed Steel Spiral Flute Extension Tap - Modified Bottoming Chamfer, 4" OAL, 2B Class of Fit
Item #: 64183346
Brand: OSG
Model #: 1766701
Exact Tooling IR#: 04
Features and Benefits
Modified bottoming chamfers similar to bottoming chamfers, but longer and have more teeth. They are used for threading to the bottom of blind holes and constructed of 2 to 2-1/2 threads.
Spiral flute taps are used for threading blind holes in aluminum, brass and softer steels. The flute geometry draws the chips away from the hole where chip disposal may be an issue.
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.
Vanadium High Speed Steel (HSSE) is made of high speed steel, carbon, vanadium carbide and other alloys to increase abrasive wear resistance and toughness. It is commonly used on stainless steels and high silicon aluminums.
| Product Specifications | |
|---|---|
| Thread Size | #8-32 |
| Overall Length (Inch) | 4 |
| Overall Length (Decimal Inch) | 4.000 |
| Chamfer | Modified Bottoming |
| Thread Limit | H3 |
| Class of Fit | 2B |
| Number of Flutes | 3 |
| Tap Type | Spiral Flute |
| Finish/Coating | Oxide |
| Flute Direction | Right Hand |
| Thread Standard | UNC |
| Material | Vanadium High Speed Steel |
| Thread Direction | Right Hand |
| Helix Angle | 30 |
| Shank Diameter (Decimal Inch) | 0.1680 |
| Square Size (Decimal Inch) | 0.1310 |
| Material Application | Carbon Steel; Hardened Steel; Stainless Steel |
| Neck Length (Decimal Inch) | 1.1250 |
| Shank Size Type | Reduced |
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