OSG - 1/4-18 NPTF, 15° Helix, 4 Flutes, Bottoming Chamfer, TiCN Finish, High Speed Steel, Spiral Flute Pipe Tap - 9/16" Shank Diam, 1-1/16" Thread Length, 0.3750" Projection, 0.421" Square Size, Series S125
Item #: 67199950
Brand: OSG
Model #: 1251408
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.
High Speed Steel (HSS) provides good wear-resistance and can be used in general purpose applications for both ferrous and non-ferrous materials.
Titanium carbonitride (TiCN) is harder and more wear-resistant than TiN. It is commonly used on stainless steels, cast iron and aluminum alloys.
Bottoming chamfers are used for threading blind holes to the bottom. They have 1 to 2 threads.
| Product Specifications | |
|---|---|
| Thread Size (Inch) | 1/4-18 |
| Thread Standard | NPTF |
| Material | High Speed Steel |
| Finish/Coating | TiCN |
| Number of Flutes | 4 |
| Helix Angle | 15 |
| Overall Length (Inch) | 2-7/16 |
| Thread Length (Inch) | 1-1/16 |
| Series/List | S125 |
| Shank Diameter (Decimal Inch) | 0.5625 |
| Square Size (Decimal Inch) | 0.4210 |
| Material Application | Aluminum; Cast Aluminum; Cast Iron; Hardened Steel; High Carbon Steel; Low Carbon Steel; Medium Carbon Steel |
| Projection (Decimal Inch) | 0.3750 |
| Chamfer | Bottoming |
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