Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2551TJM found under Shackle by Ocean Products Researchinc. The National Stock Number assigned to this part is 4030012578532, 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 2551TJM.