Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RJB1828-4 found under Bearing Roller Airframe by Mpb Corp. The National Stock Number assigned to this part is 3110012396470, and the Federal Supply Class is 3110 Bearings Antifriction Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like RJB1828-4.