Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 50643 found under Bushing Oil Pressur by Hamilton Sundstrand Corporation. The National Stock Number assigned to this part is 1560006321051, and the Federal Supply Class is 1560 Airframe Structural Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 50643.