The Amphenol FCI 67998-456HLF is a 56-position, dual-row unshrouded header from the BERGSTIK® II series, on the standard 0.100" (2.54mm) pitch. It is a board-to-board interconnect, typically used as the pin header half of a mating pair with a matching receptacle or IDC socket.
The 0.100" (2.54mm) pitch and dual-row layout are the defining footprint dimensions — this header mates with any standard 0.100" pitch IDC socket or receptacle that has 56 positions in two rows. The 5A per circuit rating at 110V is typical for signal-level and moderate power distribution; the tin plating on both the mating surface (100.0µin / 2.54µm thick) and the solder tails is suited for applications with a limited number of mating cycles, such as internal board-to-board connections or one-time harness assembly.
The overall contact length is 0.525" (13.34mm), with a mating length of 0.318" (8.08mm) and a post length of 0.107" (2.71mm) for the solder tail.