Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 055-6 found under Cap Pillow Block by Cleveland Steel Products Corp Sub Of. The National Stock Number assigned to this part is 3130006097109, 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 055-6.