Drill Chuck Key Size Chart. The next size up in Jacobs is a 33-34 but it doesnt give the pin size. Taper Size Charts and Diagrams.
Look at the cartridge and the bit and the engraved figures. Chuck nose service parts are still available as listed in the chart below. Drill Chuck adaptor Holding Capacity.
Keys Drifts Removal Wedges - Drill Chucks Adapters Type.
The correct size key will rotate smoothly without skipping in the hole. Usually on the side of the drill chuck there will be some stamped numbers. This might be a case of cheap chuck keys. How to Size Chuck Keys.