1) CAD Models
2) Blueprints, Parts Lists, General Notes, E.O.'s, etc.
3) Stock Material (and size if known)
4) Machine data:
a) Make/Model
b) Control (FANUC 15i, MAZAK, YASNAC, SIEMENS 840D, etc..)
c) Limits (Spindle RPM, Feed rate, XYZ limits)
d) Sample CL or NC programs
5) Lead time required