Depending on the length of the part, they can even be Wire EDM'ed with +/-.0005" or even closer. Even Machining to that tolerance might be possible.
If you need further help, please let me know.
I have designed some pick and place nozzles that are used in circuit board assembly. They can pick 02 X 01 mm sized parts accurately.
If you need any help, please contact me: kka111@ameritech.net.
Also, Tom001, can you contact me? I am working on a project where we have to design a collet...