Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AHD23NM found under Hood Divers Suit by Parkway Group The. The National Stock Number assigned to this part is 4220002504393, and the Federal Supply Class is 4220 Marine Lifesaving And Diving Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AHD23NM.