High Carbon Steel Tap & Drill Bit Combo Sets
Tap and drill bit combo sets are ideal for drilling the proper hole size and cutting internal threads.
- Most taps feature four-flute design for maximum chip clearance
- Recommended drill size is permanently marked on each tap
| Item # | Type | Tap Size | Drill Size | Quantity |
|---|---|---|---|---|
| 21660 | Machine screw | 4-40 NC | 43 | 3, 1 set per card |
| 21661 | Machine screw | 6-32 NC | 36 | 3, 1 set per card |
| 21662 | Machine screw | 8-32 NC | 29 | 3, 1, set per card |
| 21663 | Machine screw | 10-24 NC | 25 | 3, 1, set per card |
| 21664 | Machine screw | 10-32 NC | 21 | 3, 1, set per card |
| 21665 | Machine screw | 12-24 NC | 16 | 3, 1, set per card |
| 21666 | Fractional | 1/4-20 NC | 7 | 3, 1, set per card |
| 21667 | Fractional | 1/4-28 NF | 3 | 3, 1, set per card |
| 21668 | Fractional | 5/16-18 NC | F | 3, 1, set per card |
| 21669 | Fractional | 3/8-16 NC | 5/16" | 3, 1, set per card |
| 21670 | Fractional | 1/2-13 NC | 27/64" | 3, 1, set per card |
| 21671 | Pipe | 1/4-18 NPT | 7/16" | 3, 1, set per card |