Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HL253YW1NF033B found under Band Marker by Tyco Electronics Corporation. The National Stock Number assigned to this part is 9905015178034, 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 HL253YW1NF033B.