ISO Thread Specifications

Metric threads only.

M 16 x 2 - 4h -5H

• M — ISO Metric designation
• 16 — Nominal diameter in millimeters
• 2 — Thread pitch in millimeters (distance from top of one thread to top of the next)
• 4h — Class of fit of this thread (optional)
• 5H — Class of fit of mating thread (optional)