It is the male (Pin) half of a solder-cup termination pair, designed for field wiring or repair of D-sub cable assemblies where you need to attach individual wires directly to the contact without a crimp tool. Gold at this thickness also resists corrosion in industrial or mildly corrosive environments better than a thin flash or tin plating. The contact is made from brass, a standard choice for stamped D-sub pins that balances conductivity with formability during the stamping process. It comes in Bulk packaging, so you are buying loose contacts for manual or semi-automated assembly — not a reel for a machine.
Solder Cup Termination — What That Means for Assembly
The solder cup termination means you tin the stripped wire end, insert it into the cup, and solder. This is the classic field-replaceable method — no special crimp die or tooling required, just a soldering iron. The 5-745287-4 mates with any standard AMPLIMITE HDP-20 D-sub receptacle housing or female connector that accepts stamped pin contacts. It is not compatible with machined-contact D-sub systems (which use a different pin diameter and retention method). If you are rebuilding a legacy D-sub cable, this is the correct pin for HDP-20 stamped-contact shells.