Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 979-1B254 found under Collar Bearing by Advanced Logic Resources Inc. The National Stock Number assigned to this part is 3110013867259, 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 979-1B254.