Steve...
I'm sure you could buy them at a machine shop...
BUT, if your post included any additional information ... like: Approximately where you are located, what loader OR tractor model you have, or better yet the pin diameter and spacing for your bucket.
The reason I say this is I have a factory bucket that I removed when I switched to SS quick tatch system. I always figured I would slice the attaching points off my bucket and weld on SS attaching plates. I started to do that got the plates but never did it, If you were in the general area it would be practical to take you my bucket and let you have the original attaching point assembly... but there is no reason to consider this without knowing where you are, you could be anywhere on the planet and post to this forum... also if the pin holes are the wrong spacing or size...I only mention this because many people have asked general questions without including enough information to actually get the best response, I am sure I am not that unique there has to be hundreds of other pin attachment parts out there not being used... some could be very near you. KennyV