The through-hole solder termination suits wave-solder assembly; the 0.155" (3.94mm) post length provides enough stand-off for solder fillet inspection on standard 1.6mm PCBs. Three rows at 0.250" (6.35mm) row spacing give a 0.500" (12.7mm) overall width across the outer rows — plan the board keep-out zone accordingly. All 9 positions are loaded, so no blanking or dummy pins to account for.
The nylon housing carries UL94 V-0 flammability classification. No other agency approvals (UL, CSA, VDE) are listed on the standard product record — verify with the factory if a specific certification is required for your end-equipment listing.