Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MR3820-4PC32 found under Bearing Sleeve by Carrier Corporation. The National Stock Number assigned to this part is 3120003393418, and the Federal Supply Class is 3120 Bearings Plain Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like MR3820-4PC32.