We have had good luck with these folks.
They are ISO9000 certified. Their work for us has been small lot quantities. I know they do production run stuff also. They can take our SW files directly.
They have always acted efficiently and professionally. You'll have to determine if their pricing fits your needs.
I highly recommend E&S Precision Machine. They're located in Modesto, Ca., but will ship throughout the U.S. They make parts for our Chicago plant all the time.
They do great work, are helpful, know which side their bread is buttered on, and will bend over backward to help a customer. I started doing business with them when I was at a customer's site and needed a part. Our usual machine shop wanted two weeks to make the emergency part, but E&S was on site in minutes and made the part same day. That's the kind of service that I need, so I've been giving them most of my business ever since. They work with my native Solidworks files, too, which saves me a ton of file conversion time.
Here's a link to their website:
One of my team told me I received an email from you while I was on vacation last week. It appears I must have delited it when I was cleaning out my in box. We would be very interested in looking at your projects. Please if you don't mind send the files to me again. I look forward to hearing from you.
Jimmie L. Elzner
E & S Precision Machine, Inc.
I would recommend http://www.rapidmachining.com/ they quote directly from 3D CAD and you can get a quote in less than a day.
Quotes are free and they offer free design feed back. The best hint I can offer for designing machine parts is to not use standard inside radii dimesions. If your going to use a .250 inside radius try and use a .200 or .300 this way you will not get any tool chater causing toluene issues and more time programming. For more info just call these guys.