Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HS-11-2H-3553 found under Sink Kitchen by Delavan Inc. The National Stock Number assigned to this part is 4510013855093, 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 HS-11-2H-3553.