Pick a thread and get the tap drill, pitch and clearance holes. Metric and imperial.
Tap drill (≈75% thread)
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Pitch
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Major Ø
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Clearance holes
Close
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Normal
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Loose
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Tap drill shown is for ~75% thread engagement (general use). For tough materials or hand-tapping, drill slightly larger (lower % thread) to reduce tap breakage.
Need it made?
Need the part machined? Post it free — local makers quote.