Includes
Pillow Block Units; Cartridge Units; Flange Units; Takeup Units; Hanger Box Units; Flat Box Units; Step Box Units.

Excludes
Antifriction Bearings (FSC 3110); Plain Unmounted Bearings (FSC 3120).

Notes
Bearings in this class may be plain bearings or anti-friction bearings that are housed and/or mounted in a supporting device for mounting purposes.

Possible NAICS Codes
332991 – Ball and Roller Bearing Manufacturing
336411 – Aircraft Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
333618 – Other Engine Equipment Manufacturing
332510 – Hardware Manufacturing
336390 – Other Motor Vehicle Parts Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
334519 – Other Measuring and Controlling Device Manufacturing
333914 – Measuring, Dispensing, and Other Pumping Equipment Manufacturing