The Amphenol 86840-440HLF is a 40-position unshrouded male pin header from the BergStik® II series, built on the standard 0.100" (2.54mm) pitch grid with matching 0.100" row spacing. The phosphor bronze contact spring holds its normal force across the rated temperature range without relaxing. The insulation height of 0.190" (4.83mm) and mating pin length of 0.318" (8.08mm) give enough clearance for standard shrouded receptacles or stacking connectors.
For the board layout engineer: the 0.100" pitch and 0.100" row spacing define a standard 0.100" x 0.100" grid pattern — the same footprint used by BergStik, Dubox, and most 0.100" pitch header families. The 40 through-hole solder tails are 0.230" (5.84mm) long, sized for a standard 0.062" to 0.093" PCB thickness. The right-angle bend means the tails emerge on the same side as the pin tips, so the board edge must have clearance for the body overhang. The UL94 V-0 black thermoplastic housing holds up to the soldering process without distortion.