TY - GEN ED - Coastal Training Technologies Corp. TI - Roughing and finishing external threads SN - MED0002066(Local) CY - Virginia Beach, Va. PB - Coastal Training Technologies Corp. KW - Machine Technology KW - Machine part industry N1 - This video program will show an operation the machinist performs frequently -- cutting external threads on the engine lathe. This demonstration will show how to cut one of the most common forms of screw thread -- the unified, a sixty degree and V-type threads ER -