Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number P41-45 ITEM 73 found under Spring Helical Extension by Elsag Bailey Inc. The National Stock Number assigned to this part is 5360006574692, 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 P41-45 ITEM 73.