Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AD449 found under Bearing Pressure Pu by Gast Mfg Corp. The National Stock Number assigned to this part is 3110009376433, and the Federal Supply Class is 3110 Bearings Antifriction Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AD449.