I’ve attached links to a MacNeale safe lock that is missing a spline key/set screw meant to hold the dial shaft to the drive wheel. It’s possible the spline key was drilled out or alternatively it’s just missing the set screw. I believe the latter is the case as the bottom of the hole where the set screw would go is threaded on both the dial shaft side as well as the drive wheel inner hole. The hole does have a taper - it’s wider at the top and narrower as it fits into the threads between the drive shaft and the drive wheel.

If someone has a picture of a MacNeale lock with a set screw, can they post a picture as I’m going to need to fabricate one.

I had trouble getting my Imgur pictures to link so I’m just going to post the Imgur URLs.

https://i.imgur.com/xQLoP4h.jpg

https://i.imgur.com/2CDWmqA.jpg

https://i.imgur.com/hmVrVcl.jpg

https://i.imgur.com/VlyKBUd.jpg

https://i.imgur.com/AIRUGFb.jpg

https://i.imgur.com/RwttOVG.jpg

Also, my lock case is stamped M & U 271. Is this the lock type? The top of the case (to which the wheel pack screws in) is stamped 272.

Thank you.