Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 129 860 SS 440 HELI found under Standoff Threaded Spacing by Promptus Electonic Hardware Inc. The National Stock Number assigned to this part is 5340016653206, and the Federal Supply Class is 5340 Hardware Commercial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 129 860 SS 440 HELI.