I'm looking at this product, contacts for a connector.
The text says:
Molex 19420 Series PCB Connector Contact, 2.55 x 2.8 mm, 16 → 14 AWG Tin Plated
What does the last part mean?
16 → 14 AWG
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16 -> 14 AWG is simply stating that the connector contact recepticle (where the wire is crimped to the contact) can accept wire diameters in this range, see also.
Note that a higher AWG size value means a smaller diameter.
Possibly the arrow means "16 through 14" - just another way of saying "from 16 (included) to 14 (included)".