Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 300XD-S found under by Teledyne Rd Instruments Inc. The National Stock Number assigned to this part is 5845015326763, and the Federal Supply Class is 5845 Underwater Sound Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 300XD-S.