Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 81 0730 58 found under Neomycin And Polymy by Burroughs Wellcome Co. The National Stock Number assigned to this part is 6505002213426, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 81 0730 58.