INACTIVE FOR NEW DESIGN * SEE NAS380

Purpose: This specification provides a standard for the manufacture, performance, inspection, and procurement of horizontal and vertical spindle precaution bed-type milling machines.

Classification: Bed-type Milling Machines, Horizontal and Vertical Spindly.

Intended Use: This specification is intended to establish the preferred relation of spindle horsepower, speeds, and feeds for the close-tolerance milling of high-tensile, thermal-resistant materials required in the aircraft and missile manufacturing industry. The requirements also provide also provide the flexibility required in operation and set up.