Different Chuck Key Sizes

If you lost the chuck buy a replacement.

Different chuck key sizes.

The chuck size looks something like. This measurement is called the pilot shank. Is there such a thing anymore as a good hardware store. Hopefully these will match up to one below.

There a lot of different chuck key sizes. Unless a real oddball most chuck keys will be listed by pilot size. The drill press with the supreme chuck is originally from the shop where i worked from 78 to 99 when they went belly up i bought many of the. Determining the proper replacement chuck key for your drill can be very frustrating.

Look closely at the chuck on the drill for. One of the more popular brands is jacobs and most manufacturers will list an equivalent number which can make determining a replacement key a bit easier. Usually on the side of the drill chuck there will be some stamped numbers. Generally a chuck does not have a wide range of sizes but only two.

Losing the chuck key to your drill can stop your diy project in its tracks because you won t be able to change your drill bit. Where i live we ve got home depot lowes osh and ace. There are more then 12 variations of drill chucks so have the right information when making your selection. 1 4 3 8 1 2 etc.

Since everyone has different needs let s run down the different grades of chucks. Ensuring you get the correct sized chuck avoids a second trip to the shops. Bring the chuck to a good hardware store and you will be able to find the right one. But what if you need to drill a hole whose diameter will be larger say 20 mm.

There are 2 major chuck sizes that most handheld drills have 3 8 or 1 2 if we crunch the numbers we can see that a 1 2 chuck is only 1 8 larger than a 3 8 chuck. Jacobs chuck key selection guide. I tend to replace the bent coathanger type of key with a cross drilled type although i have broken teeth from the cheeper home store variety. How to size chuck keys.

I find an old round shoe lace tied to a key for the hand drill by the cord plug not only reminds you to unplug before changing bits but make the wherabouts of the key close at hand. 10 mm 3 8 inches and 13 mm 1 2 inch. For this you can do boring to expand the hole. In stock and ready to ship.