Wire range and contact finish
The 640310-3 is a socket contact in the TE Connectivity Universal MATE-N-LOK series, accepting 10-12 AWG wire with a tin-plated mating surface and crimp termination.
Plating choice across the series
For a pin rather than socket, the 640309-3 provides the same 10-12 AWG range and tin finish in the same Universal MATE-N-LOK series.
