The 64 loaded positions out of 96 total means the connector body is the full 96-position size but only the centre and outer rows are populated, a common configuration for 64-circuit backplane buses where the middle row carries ground or keying.
The 64 loaded positions mean the PCB must have plated through-holes only for the loaded rows; the unloaded positions on the connector body are simply unpopulated and do not require holes. Confirm your backplane's hole pattern matches a 3-row DIN layout before committing.
Mating and System Integration
The male pins are gold-plated for corrosion resistance and reliable contact over multiple insertion cycles. The through-hole solder tails are designed for wave-solder assembly to the PCB. No crimp or press-fit option — this is a solder-only termination.