Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number P4999 5 found under Nipple Flanged Mani by Union Industries Inc. The National Stock Number assigned to this part is 2030001276125, and the Federal Supply Class is 2030 Deck Machine. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like P4999 5.