Spiral flute tap details
Drillco 5/16-18 Nitro Max Spiral Flute Tap (226N120C)
Drillco 226N120C 5/16-18 Nitro Max Spiral Flute Tap is engineered to DIN/ANSI specifications with extended DIN lengths for longer reach and deeper threading in a single pass. Featuring a TiCN coating, this tap maintains sharp cutting edges and lowers friction for superior performance. Made from premium-grade high-speed steel (HSS) and finished with black oxide, it offers enhanced durability compared to bright finishes. Suitable for CNC machining, it is available in taper, plug, and bottoming geometries to accommodate diverse threading applications.
Manufactured to DIN/ANSI standards with extended DIN length for deeper threading
TiCN coating helps preserve sharp edges and reduce friction
Constructed from premium-grade high-speed steel (HSS)
Black oxide finish provides longer tool life than bright finishes
Available in taper, plug, and bottoming geometries for versatility
Standard square shank compatible with tap wrenches and CNC machines
Enables precise, deep threading in fewer passes
Improves thread quality while reducing tool wear
Optimized for CNC machine tapping in various materials
Technical Specifications:
Thread Size: 5/16-18
Type: Nitro Max Spiral Flute Tap
Material: Premium-Grade High-Speed Steel (HSS)
Finish: Black Oxide with TiCN Coating
Application: CNC Machine Tapping
Country of Origin: USA
Product identification
- Brand: Drillco
- Model / MPN: 226N120C
