#10-24 UNC tap drill size

#25 drill — 0.1495 in / 3.80 mm (75% thread)

Major Ø 0.1900 in · 24 threads per inch · coarse series. The chart pick targets 75% thread; nearby standard drills:

Drill	Decimal (in)	mm	Thread %
#23	0.1540	3.91	67%
#24	0.1520	3.86	70%
#25	0.1495	3.80	75%
#26	0.1470	3.73	79%

Cut taps only — roll-form taps need a larger hole. 65–75% suits general work; drop toward 55% in tough material. Verify before you cut.

Same size, fine series: #10-32 UNF