Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 83-00105 found under Spring Helical Extension by Countryman Group Ltd. The National Stock Number assigned to this part is 5360006076532, 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 83-00105.