Niagara Cutter - 1/4-18 Thread, 5/16" Shank Diam, AlCrN Coating, Solid Carbide Straight Flute Thread Mill - 3 Flutes, 3" OAL, 1/4" Min Noml Diameter
Item #: 55419055
Brand: Niagara Cutter
Model #: N68840
Exact Tooling IR#: 04
Features and Benefits
 Solid carbide provides better rigidity than high speed steel. It is extremely heat-resistant and used for high speed applications on cast iron, nonferrous materials, plastics and other tough-to-machine materials. 
 Aluminum chromium nitride (AlCrN) has higher-heat resistance than AlTiN. It is commonly used for machining aircraft and aerospace material, nickel alloys, stainless steel, titanium, cast iron and carbon steel. 
| Product Specifications | |
|---|---|
| Threads Per Inch | 18 | 
| Thread Size (Inch) | 1/4-18 | 
| Minimum Nominal Diameter (Inch) | 1/4 | 
| Material | Solid Carbide | 
| Thread Type | Internal/External | 
| Shank Diameter (Inch) | 5/16 | 
| Number of Flutes | 3 | 
| Cutting Diameter (Decimal Inch) | 0.3050 | 
| Finish/Coating | AlCrN | 
| Length of Cut (Decimal Inch) | 0.6250 | 
| Length of Cut (Inch) | 5/8 | 
| Thread Standard | NPTF | 
| Through Coolant | NonThrough Coolant | 
| Overall Length (Inch) | 3 | 
| Tolerance (Decimal Inch) | +0.000 to -0.002 | 
| Staggered Tooth | No |