Taps & Dies Machine Screw Taps
Triumph HSS straight flute taps for numbered machine screw threads, 4-40 through 12-28. 27 taps in tap, plug and bottoming styles, coarse (NC) and fine (NF).
Choosing a machine screw tap
Common questions
What do the numbers in 10-24 mean?
The first number is the screw size and the second is threads per inch. So 10-24 is a #10 screw with 24 threads per inch. 10-32 is the same screw with a finer pitch.
Plug tap or bottoming tap?
Plug taps suit through holes and most general tapping. Bottoming taps cut threads close to the bottom of a blind hole. Start with a plug tap if you can, then finish with bottoming.
How do I keep from snapping a small tap?
Drill the right tap drill size, keep the tap square, use cutting fluid, and turn slowly. Back off a quarter turn every half turn to break the chip. If it binds, stop and back it out.
Know-how for Taps & Dies Machine Screw Taps
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Buying for a crew?
Call 833-438-6657, 8 AM to 4 PM MST. We know the parts, not just the part numbers.