Minimum quantities per diameter for drills made to order.
Standard straight-shank twist drills
| Diameter, mm | Diameter, inch | Wire gauge / letter | Ground, pcs |
|---|
| 0.30–0.99 | 1/64–3/64 | #80–#61 | 2,000 |
| 1.00–2.99 | 3/64–1/8 | #60–#32 | 5,000 |
| 3.00–5.99 | 1/8–15/64 | #31–#1, A | 3,000 |
| 6.00–9.99 | 15/64–25/64 | B–X | 1,500 |
| 10.00–12.99 | 25/64–33/64 | Y, Z | 800 |
| 13.00–20.00 | 33/64–25/32 | – | 300 |
Special straight-shank twist drills
| Diameter, mm | Diameter, inch | Wire gauge / letter | Ground, pcs |
|---|
| 0.30–0.99 | 1/64–3/64 | #80–#61 | 2,000 |
| 1.00–2.99 | 3/64–1/8 | #60–#32 | 3,000 |
| 3.00–5.99 | 1/8–15/64 | #31–#1, A | 1,500 |
| 6.00–9.99 | 15/64–25/64 | B–X | 750 |
| 10.00–12.99 | 25/64–33/64 | Y, Z | 300 |
| 13.00–20.00 | 33/64–25/32 | – | 100 |
Standard and special Morse taper shank twist drills
| Diameter, mm | Diameter, inch | Wire gauge / letter | Ground, pcs | Milled, pcs |
|---|
| 6.00–14.00 | 1/4–35/64 | #9–#1, A–Z | 500 | 150 |
| 14.25–23.00 | 9/16–29/32 | – | 300 | 100 |
| 23.25–31.50 | 59/64–1 15/64 | – | – | 50 |
| 32.00–45.00 | 1 17/64–1 49/64 | – | – | 25 |
| 45.10–76.00 | 1 25/32–2 31/32 | – | – | 15 |
