National Item Identification Number
00-477-1839
004771839
3020-00-477-1839
3020004771839
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)
95542
Reference Numbers (Part Numbers)
243-127-2140
Required Categories
MATERIAL
SURFACE TREATMENT
TEETH QUANTITY
TOOTH FORM
PRESSURE ANGLE
PRECISI
Required Description
ALUMINUM ALLOY OVERALL
ANODIZE OVERALL
140
STANDARD
20.0000 DEGREES
QUALITY