OSG - 3/8-18 NPTF, 15° Helix, 4 Flutes, Modified Bottoming Chamfer, Oxide Finish, Vanadium High Speed Steel, Spiral Flute Pipe Tap - Right Hand Flute, 0.7" Shank Diam, 1-1/16" Thread Length, 0.4540" Projection, 17/32" Square Size, Series 318
Item #: 64182975
Brand: OSG
Model #: 1737901
Exact Tooling IR#: 04
Features and Benefits
NPTF (National Pipe Taper Fuel) refers to Dryseal American National Standard Tapered Pipe Threads. They do not require a sealant due to being formed by metal to metal contact.
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 in general applications on stainless steels and high silicon aluminums.
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.
Modified bottoming chamfers are similar to bottoming chamfers, but they are longer and have more teeth. They are used for threading to the bottom of blind holes and have 2 to 2-1/2 threads.
| Product Specifications | |
|---|---|
| Thread Size (Inch) | 3/8-18 |
| Thread Standard | NPTF |
| Material | Vanadium High Speed Steel |
| Finish/Coating | Oxide |
| Number of Flutes | 4 |
| Helix Angle | 15 |
| Overall Length (Inch) | 2-9/16 |
| Thread Length (Inch) | 1-1/16 |
| Series/List | 318 |
| Shank Diameter (Decimal Inch) | 0.7000 |
| Square Size (Decimal Inch) | 0.5310 |
| Material Application | Carbon Steel; Hardened Steel; Stainless Steel |
| Flute Direction | Right Hand |
| Projection (Decimal Inch) | 0.4540 |
| Chamfer | Modified Bottoming |
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