Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 90-1600-00400 ITEM 3 found under Piston Hydraulic Brake by Cincinnati Gear Co The. The National Stock Number assigned to this part is 2530013430759, and the Federal Supply Class is 2530 Vehicular Brake Steering Axle Wheel And Track Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 90-1600-00400 ITEM 3.