4920-00-237-3466 SCALE,SPECIAL Index 4820-00-237-3468 VALVE,GLOBE

National Stock Number:
3020-00-237-3467

Federal Supply Class:
3020

National Item Identification Number:
002373467

Description:
GEAR,ANTIBACKLASH,SPUR

Detail:
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.


Manufacturer Information:
10236901-218876U S ARMY AVIATION AND MISSILE COMMAND
ABC27-90P123266SECS, INC.
Z5E-9000328DESIGNATRONICS INCORPORATED


Techincal Specification:
ATTACHMENT METHODCLAMP
BORE NOMINAL DIAMETER0.187 INCHES BOTH ENDS
BORE STYLEPLAIN BOTH ENDS
CLAMPING SURFACE NOMINAL LENGTH0.305 INCHES FIRST END
FACE NOMINAL WIDTH0.104 INCHES
HUB STYLE DESIGNATORSPLIT FIRST END
HUB NOMINAL DIAMETER0.250 INCHES FIRST END
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-764,TYPE 303,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 303 OVERALL
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.221 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER1.437 INCHES
PITCH DIAMETER1.4053 INCHES MINIMUM AND 1.4063 INCHES MAXIMUM
PRECISION CLASSIFICATIONQUALITY NUMBER 10
PRESSURE ANGLE20.0000 DEGREES
STYLE DESIGNATORPROTRUDING HUB
SURFACE TREATMENTPASSIVATE OVERALL
TEETH QUANTITY90
TOOTH FORMSTANDARD


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