Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ER2123 found under Linch Pin Safety by Pearson Engineering Ltd. The National Stock Number assigned to this part is 2590991922323, and the Federal Supply Class is 2590 Miscellaneous Vehicular Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ER2123.