Threads on turned and milled parts

The turning page lists threading and drilling among standard operations. The milling page lists holes among the shapes the mill is expected to produce. Neither page publishes a tap-size chart, so this rebuild does not invent one.

Practical RFQ note: if a hole is a thread, say so on the drawing with the standard you want (metric coarse, UNC, pipe). If the thread is after heat treat or after anodize, say that too — hard turning is listed for HRC > 45 stock, and anodize thickness is a finishing control, not a guess.

Vietnam can pick up threaded turned work when the quantity is large and the geometry stays on lathe or Swiss.

Send a drawing if the note maps to a live part.