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HSS Drill Bits
High Speed Steel Jobber Drills
Tapping drills are just Jobber Drills in weird and wonderful sizes.
| Drill Diameter (mm) | Tapping drill will suit these thread sizes | ||||
| 1.50 | |||||
| 1.60 | M2 x 0.4 | ||||
| 2.50 | M3 x 0.5 | ||||
| 2.85 | 6-32 | ||||
| 3.00 | 4BA | ||||
| 3.30 | M4 x 0.7 | ||||
| 3.50 | 8-32 | ||||
| 3.70 | 3/16 BSW | ||||
| 3.90 | 10-24 | ||||
| 4.00 | 3/16 BSF | 2BA | |||
| 4.10 | 10-32 | ||||
| 4.20 | M5 x 0.8 | ||||
| 4.50 | 1BA | 12-24 | |||
| 5.00 | M6 x 1.0 | ||||
| 5.10 | 1/4 BSW | 0BA | 1/4 UNC | ||
| 5.30 | 1/4 BSF | ||||
| 5.50 | 1/4 UNF | ||||
| 5.60 | 1/4 BSCY | ||||
| 6.00 | M7 x 1.0 | ||||
| 6.50 | 5/16 BSW | ||||
| 6.60 | 5/16 UNC | ||||
| 6.80 | 5/16 BSF | M8 x 1.25 | |||
| 6.90 | 5/16 UNF | ||||
| 7.00 | 5/16 BSCY | M8 x 1.0 | |||
| 8.00 | 3/8 UNC | ||||
| 8.30 | 3/8 BSF | ||||
| 8.50 | 3/8 UNF | ||||
| 8.70 | 3/8 BSCY | ||||