That ramp is the difference between a connection that stays put and one that intermittently drops out on a conveyor line or pump skid.
The through-hole termination uses kinked pins for solder retention — the kink holds the pin in the plated hole during wave solder, preventing float. Insulation height is 0.555" (14.10 mm), and the mated stacking height is 19.4 mm. That stack height matters when you're routing the cable bundle under a cover or inside a control cabinet — measure the clearance before you commit the BOM.