Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4B1933 found under Bearing Roller Needle by Dresser Rand Group Inc. The National Stock Number assigned to this part is 3110001203106, 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 4B1933.