Board Fit and Contact Ratings
The 10129381-912003BLF: This is a 12-position, dual-row unshrouded header on 2.54mm pitch – the standard 0.100-inch grid that matches most prototyping boards and legacy footprints. For repeated disconnect/reconnect in a field-service application, a thicker gold (15µin or more) would be the better call.
Mounting and Mating Reality
The push-pull fastening type confirms there is no integral latch; the mating connector must provide its own locking mechanism if the application sees vibration.