American Precision Machining. CNC & Screw Machines. Large or Small Run. Grovtec can Machine It. Production Screw Machining Services for Steel, Stainless Steel, Aluminum, Brass, Titanium and Plastics; Capabilities Include Multi / Single-Spindle Screw Machining, Vertical / Horizontal Milling, CNC Swiss Machining and CNC Turning; Secondary Services Such as Engineering, Riveting, Drilling, Tapping, High Speed Deburring, Stamping, Sand Blasting and Assembly Offered; Serves the Military, Tools and Knife, Oil ...