Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HAL3-664PC52 found under Spring Torsion by Aai Corporation. The National Stock Number assigned to this part is 5360000637829, and the Federal Supply Class is 5360 Coil Flat Leaf And Wire Springs. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like HAL3-664PC52.