Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2356-AY3-C found under Bathythermograph by Shiloh Industries Inc. The National Stock Number assigned to this part is 6655000738935, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 2356-AY3-C.