Spoke & Spoke Nipple Info for 48 16"

[Skirted]

Does anyone know the Buchanan part number for the correct spoke and nipple for my 48 in chrome plated steel?

http://www.buchananspokes.net/products/individual_chrome_plated_steel_spokes.asp

Thinking the spoke is a 79C and know the nipple is .343 dia so would guess its the N9349C but just not sure. The gauge size reference is a bit confusing.
Thanks!