Roll Tap Series N+RS/N-RS Thread Forming Taps for Non-Ferrous Materials Spiral Fluted Taps (for blind hole) Size Class Code Chamfer L ℓ ℓn ℓs Ds K ℓk Lobe Type Stock (mm) (mm) (mm) (mm) (mm) (mm) (mm) NRSM52.5DP 4P M2.5 × 0.35 G5 46 6.3 14 29 3 2.5 5 4 5 △ NRSM52.5DB 2P NRSP52.6FP 4P Spiral Fluted Taps (for through hole) G5 ◎ NRSP52.6FB 2P M2.6 × 0.45 46 8.1 14 29 3 2.5 5 4 4 NRSP62.6FP 4P G6 ○ NRSP62.6FB 2P NRSM52.6DP 4P G5 Spiral Pointed Taps (for through hole) NRSM52.6DB 2P M2.6 × 0.35 46 6.3 14 29 3 2.5 5 4 5 △ NRSM62.6DP 4P G6 NRSM62.6DB 2P NRSP53.0GP 4P G5 NRSP53.0GB 2P Hand Taps NRSP63.0GP 4P ◎ G6 NRSP63.0GB 2P M3 × 0.5 46 9 14 26 4 3.2 6 4 4 NRSP73.0GP 4P G7 ○ NRSP73.0GB 2P Cemented Carbide Taps NRSP83.0GP 4P G8 △ NRSP83.0GB 2P NRSM53.0DP 4P G5 NRSM53.0DB 2P M3 × 0.35 46 6.5 14 26 4 3.2 6 4 5 △ Roll Taps NRSM63.0DP 4P G6 NRSM63.0DB 2P NRSP53.5HP 4P G5 NRSP53.5HB 2P M3.5 × 0.6 NRSP63.5HP 4P 52 11 16 29 5 4 7 4 4 ○ Special Thread Taps Simple Inspection Tools G6 NRSP63.5HB 2P G7 NRSP73.5HP 4P △ NRSM53.5DP 4P G5 NRSM53.5DB 2P Pipe Taps M3.5 × 0.35 52 6.5 16 29 5 4 7 4 5 △ NRSM63.5DP 4P G6 NRSM63.5DB 2P NRSP54.0IP 4P G5 ○ NRSP54.0IB 2P Thread Mills NRSP64.0IP 4P G6 ◎ NRSP64.0IB 2P M4 × 0.7 52 11 17 29 5 4 7 4 4 NRSP74.0IP 4P G7 ○ NRSP74.0IB 2P Dies NRSP84.0IP 4P G8 △ NRSP84.0IB 2P NRSM64.0GP 4P G6 NRSM64.0GB 2P M4 × 0.5 52 9 17 29 5 4 7 4 5 △ NRSM74.0GP 4P Center Drills G7 NRSM74.0GB 2P NRSP55.0KP 4P G5 △ NRSP55.0KB 2P NRSP65.0KP 4P G6 ◎ Centering Tools M5 × 0.8 NRSP65.0KB 2P 60 13 22 33 5.5 4.5 7 4 4 NRSP75.0KP 4P G7 ○ NRSP75.0KB 2P G8 NRSP85.0KB △ JIS RO-9 ◎=Standard ○=Semi standard △=Made to order 504 For improvement, spec may change without advance notice.