DeWalt drill chuck shaft, inner thread spacing?

Feb 12, 2011 5 Replies

Anybody know what the inner thread dimensions of a DeWalt 18 volt compact drill might be?



The chuck screws on the outer threaded area of the arbor/shaft (maybe 3/8 x 24 threads), but the inner part of the shaft is also threaded. It appears to be about 1/4 inch diameter, but more than



24 threads per inch.

Thanks.


Never mind. The inner threaded part helps keep the Chuck from coming off and is reverse threaded, so I could not use it anyway.

Sorry if any reply was already on the way.

It'll be a left-hand thread, which is probably best obtained from DeWalt ...

If you're talking about the threads for the small screw that goes through the center of the bottom of the chuck and into the end of the arbor, I don't know what the thread size is, but every drill I've ever seen uses a left-hand thread there.

That's so the chuck doesn't unscrew when you're running the drill in reverse.

No kidding? Really? You think so? :)

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