https://refmanual.com/threads/unc/1-4-20/
1/4-20 Thread Dimensions — Pitch, Minor Diameter & Tap Drill
1/4-20 thread dimensions: pitch, pitch diameter, minor diameters, tap drill size and tensile stress area, computed from the ASME B1.1 basic profile.
minor diametertap drillthreaddimensionspitch
https://refmanual.com/threads/unf/3-4-16/
3/4-16 Thread Dimensions — Pitch, Minor Diameter & Tap Drill
3/4-16 thread dimensions: pitch, pitch diameter, minor diameters, tap drill size and tensile stress area, computed from the ASME B1.1 basic profile.
minor diametertap drillthreaddimensionspitch