Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 10-4881 found under Altimeter Servo Controlled Autom by Simtek Inc. The National Stock Number assigned to this part is 6610015027820, 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 10-4881.