Roll Tap Series Spiral Fluted Taps (for blind hole) N+RZ/N-RZ Thread Forming Taps for Steels Spiral Fluted Taps (for through hole) Specification ■N+RZ/N-RZ are the forming taps suitable for ferrous E materials such as carbon steels, alloy steels, and normal Oxide steels. ~ M2.6 N+RZ ~ M6 (coarse thread) Spiral Pointed Taps (for through hole) Recommended Tapping Speeds depending on Materials N-RZ ~ M6 (fine thread), M7 ~ ow carbon steels Medium carbon steels 5〜15 5〜15 TYPE:1 For icon explanation, refer to P.50 Hand Taps Cemented Carbide Taps TYPE:2 TYPE:3 Roll Taps Special Thread Taps Simple Inspection Tools TYPE:4 TYPE:5 Pipe Taps TYPE:6 TYPE:7 Thread Mills Dies Number of oil grooves : Metric thread : M2.6 and smaller=non, M3 ~ M7=4, M8=3, M10 and larger=4 For M6 and smaller, external centers of 2 thread chamfer taps are removed. Center Drills Centering Tools JIS RO-1 ◎=Standard ○=Semi standard △=Made to order 496 For improvement, spec may change without advance notice.