Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 16179-73ITEM12F found under Spring Helical Extension by Ward Leonard Electric Company Inc. The National Stock Number assigned to this part is 5360003163488, 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 16179-73ITEM12F.