Dies MS-RS-D/RS-D Rolling Dies Spiral Fluted Taps (for blind hole) Size Code Class D T Type Stock (mm) (mm) RDQ2.3E R2 M2.3 × 0.4 RDR2.3E R3 16 5 1 △ RDS2.3E R4 Spiral Fluted Taps (for through hole) M2.3 × 0.25 RDR2.3B R3 16 5 1 △ RDQ2.5F 16 5 R2 REQ2.5F 20 7 RDS2.5F 16 5 M2.5 × 0.45 R4 1 △ Spiral Pointed Taps (for through hole) RES2.5F 20 7 RDT2.5F 16 5 R5 RET2.5F 20 7 RDQ2.5D R2 Hand Taps M2.5 × 0.35 RDR2.5D R3 16 5 1 △ RDS2.5D R4 RDQ2.6F 16 5 R2 REQ2.6F 20 7 M2.6 × 0.45 RDS2.6F 16 5 1 △ Cemented Carbide Taps R4 RES2.6F 20 7 RDT2.6F R5 16 5 M2.6 × 0.35 RDS2.6D R4 16 5 1 △ REQ3.0G R2 Roll Taps M3 × 0.5 20 7 1 △ RES3.0G R4 REQ3.0D R2 M3 × 0.35 RES3.0D R4 20 7 1 △ RET3.0D R5 Special Thread Taps Simple Inspection Tools RES3.5D R4 M3.5 × 0.35 20 7 1 △ RET3.5D R5 RET4.0G R5 M4 × 0.5 20 7 1 △ REU4.0G R6 Pipe Taps RER5.0G R3 RES5.0G R4 M5 × 0.5 20 7 1 △ RET5.0G R5 REU5.0G R6 Thread Mills Dies Center Drills Centering Tools JIS Di-21 ◎=Standard ○=Semi standard △=Made to order 632 For improvement, spec may change without advance notice.