Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 80310 found under Shackle by Sycon Corp. The National Stock Number assigned to this part is 4030009686852, and the Federal Supply Class is 4030 Fittings For Rope Cable And Chain. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 80310.