The 5-104074-2: The 0.050-inch (1.27mm) pitch sets the board footprint for this 5-position single-row header. At this pitch, the per-contact current ceiling is limited by the pin spacing and the housing material's temperature rise, not the contact itself. The tin-plated solder posts handle the wave-solder joint without gold embrittlement.
This shrouded 2-wall header mates with AMPMODU System 50 receptacles that share the 1.27mm pitch and 5-position count. The latch holder locks the pair together — the latch clicks audibly on full mate and resists vibration-induced separation. In automotive and medical equipment, that latch keeps the connection closed under cable strain and chassis vibration.