Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HS5444-0007 found under Bearing Sleeve by Mcdonnell Douglas Helicopter. The National Stock Number assigned to this part is 3120013056048, and the Federal Supply Class is 3120 Bearings Plain Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like HS5444-0007.