7/16-14 UNC tap drill size

U drill — 0.3680 in / 9.35 mm (75% thread)

Major Ø 0.4375 in · 14 threads per inch · coarse series. The chart pick targets 75% thread; nearby standard drills:

Drill	Decimal (in)	mm	Thread %
V	0.3770	9.58	65%
3/8	0.3750	9.52	67%
U	0.3680	9.35	75%
23/64	0.3594	9.13	84%

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: 7/16-20 UNF