National Item Identification Number
00-421-4456
004214456
3020-00-421-4456
3020004214456
National Stock Number
Item Name
GEAR,ANTIBACKLASH,SPUR
Federal Supply Class
3020
Description
An item having one fixed gear and one free gear, both having the same complement of spur gear teeth, mounted on a common hub. The free gear is attached to the fixed gear by springs and operates as one gear. Upon installation with the mating gear, the teeth of the free moving gear are preset to mesh with teeth other than those of the fixed gear. This spring tension between the fixed gear and the free gear eliminates any free motion between the driver and the driven gear. The gear is used where identical and accurate transmitted motion between gears is required.
Commercial and Government Entity Code (Supplier Data)
09017
93322
SMITHS AEROSPACE LLC ELECTRONIC
SYSTEMS-GRAND RAPIDS
3290 PATTERSON AVE SE
GRAND RAPIDS
MI
49512
616-241-8511
Reference Numbers (Part Numbers)
204871
204871
Required Categories
TEETH QUANTITY
STYLE DESIGNATOR
PITCH DIAMETER
NOMINAL OUTSIDE DIAMETER
BORE
Required Description
50
2 PROTRUDING HUB
0.7812 INCHES NOMINAL
0.8125 INCHES
1 PLAIN BOTH ENDS
3