🔩 Thread & Tap Drill Charts

Tap drill sizes for UNC, UNF, and Metric threads. Search by thread size.

Unified National Coarse (UNC)

Thread	TPI	Major Ø	Tap Drill	Drill Ø	~% Thread

Unified National Fine (UNF)

Thread	TPI	Major Ø	Tap Drill	Drill Ø	~% Thread

Metric Coarse

Thread	Pitch (mm)	Major Ø	Tap Drill (mm)	~% Thread