Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TCR 33-42 found under Bearing Unit Plain by Mpb Corp. The National Stock Number assigned to this part is 3130015680522, and the Federal Supply Class is 3130 Bearings Mounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like TCR 33-42.