The 350583-2: The locking ramp provides audible and tactile feedback on full mate, which is useful in high-vibration environments like automotive or industrial control panels.
Contact plating and cycle life
The mating contact finish is 30µin gold over phosphor bronze. The solder tails are tin-plated, which is standard for through-hole soldering and provides a reliable solder joint with no additional surface prep.
Note that this version is RoHS non-compliant, which may affect its use in markets requiring RoHS conformance.
Cross-reference and compatibility
The 350583-1 is the closest sibling in the same series — identical pitch, shrouding, and locking ramp, but with tin-plated mating contacts instead of gold. If your application requires fewer mating cycles or a lower cost per position, the -1 is a direct drop-in. For higher cycle life or corrosive environments, stick with the -2. This header mates with the Universal MATE-N-LOK receptacle housing. Confirm the circuit count and wire gauge before committing the BOM line.