Finding a replacement drill chuck key doesn’t have to be a frustrating experience when you use Jacobs’ cross-reference information. Jacobs is a popular leading brand and most manufacturers will list an equivalent chuck number to make finding a replacement chuck key easier.
Jacobs Chuck Key Sizing Chart
Most drill chucks are stamped with chuck key numbers that indicate which chuck model they’re used on. The table below is designed to cross-reference the stamped numbers on your chuck with corresponding keys to select as replacements.
| Used on Chuck Model | Model/ Style No. | Part No. | Pilot Size | Zoro # |
|---|---|---|---|---|
| 0, 0B |
K0 / (1) |
3637 | 1/8" | G2788396 |
| 0, 0B, 0M, OBM Stainless |
K0M / (1) |
3639 | 1/8" | N/A |
| 1A, 1B | K1 / (1) | 3641 | 1/6" | G0247344 |
| 1A, 1B, 1M, 1BM Stainless | K1M / (1) | 3643 | 1/6" | N/A |
| 2A, 2B, 2BA | K2 / (3) | 3649 | 1/4" | G2653813 |
| 6A, 6AE, 6B, 34, 34B, 34KD, 34PD, 34-02, 34-06, 34-33, 34-33C, 35B, 3, 3A, 3AE, 3B, 3KD, 3PD, 14N, 55B, 56B, 58B, 75A | K3 / (3) | 3651 | 1/3" | G2452554 |
| 34-33 C, 633C, 633D | K3C / (3) | 3653 | 1/3" | G3447656 |
| 36, 36B, 36KD, 36PD, 37KD, 37PD, 59B, 16N, 18N | K4 / (3) | 3655 | 3/8" | G1166934 |
| 20N | K5 / (1) | 3657 | 4/9" | G1727625 |
| 7, 7B, 7BA |
K7 / (3) |
3659 | 2/9" | G0451071 |
| 30, 30B, 31B, 31BA, 8-1/2N, 31-01, 31-02, 41BA | K30 / (3) | 3664 | 1/2" | G2435614 |
| 32, 32B, 32BA, 33, 33B, 33BA, 33KD, 3326A, 326A, 33F, 11N | K32 / (3) | 3666 | 1/4" | G2762435 |
| DC8, Sm8, 74K, 22BA, 23BA, 24BA, 26BA, 29-33 | KK / (1) | 30052 | 2/7" | G1033532 |
| 1/4 & 3/8" Multi-Craft® (Black Handle) | KG1 / (1) | 14273 | 1/4" | G1475135 |
| 1/4 & 3/8" Multi-Craft® | KGA / (2) | 3605 |
1/4" |
N/A |
| 1/4 & 3/8 chucks | — / (1) | 30827 | 1/5" | N/A |
Once you’ve chosen the correct replacement drill chuck key, check out Zoro’s wide selection of drill bits to get your job done. Choose from wood drilling bits to pilot point drill bits to complete nearly any project.
Product Compliance and Suitability
The product statements contained in this guide are intended for general informational purposes only. Such product statements do not constitute a product recommendation or representation as to the appropriateness, accuracy, completeness, correctness or currentness of the information provided. Information provided in this guide does not replace the use by you of any manufacturer instructions, technical product manual, or other professional resource or adviser available to you. Always read, understand and follow all manufacturer instructions.