National Item Identification Number
National Stock Number
Federal Supply Class
An item designed to be mounted around the extended hub portion of a gear, wheel, or the like, to retain it securely to a shaft by compressing the slotted hub body. The item may also be used to clamp around a shaft, or the like, to prevent end motion or to retain it in position. Its compression quality is derived from a screw(s) or bolt(s) which may be a part of the item of supply. For items designed to secure directly to a shaft by use of setscrews, pins, or the like, see COLLAR, SHAFT. Excludes CLAMP, LOOP.
Commercial and Government Entity Code (Supplier Data)
Reference Numbers (Part Numbers)
ALUMINUM ALLOY, QQ-A-225/8, ALLOY 6061, T651
CHROMATE, MIL-C-5541, CLASS 3