SPEEDS shown are suggested starting points only and may be increased or decreased depending on actual material and machining conditions. Start conservatively and increase until the machining cycle is optimized.
SPEEDS may be increased for coated taps,
spiral point taps, fine pitch taps and when
the percentage of thread is decreased.
SPEEDS may need to be reduced for spiral flute taps, coarse pitch taps, bottoming taps, difficult materials, longer thread lengths and when the percentage of thread is increased.