Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 53-600054-5 found under Sleeve Pitot Static by Duncan Industries Inc. The National Stock Number assigned to this part is 6610007677686, and the Federal Supply Class is 6610 Flight Instruments. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 53-600054-5.