3306-691

Spur Antibacklash Gear

NSN 3020-00-020-3920

DEMIL

Shelf Life

UOM

NIIN

Demil:

Shelf Life:

N/A

UOM:

1 EA

NIIN:

000203920

Detail Specifications

Pitch Diameter:

1.2500 inches

Teeth Quantity:

Bore Style:

Plain both ends

Outside Diameter:

1.2920 inches

Pressure Angle:

14.5000 degrees

Distance Between Body Face And Protruding Hub End:

0.185 inches first end

Distance Between Body Face And Protruding Hub End:

0.063 inches second end

Face Width:

0.062 inches

Bore Diameter:

0.0908 inches both ends

Hub Style Designator:

Plain both ends

Hub Diameter:

0.185 inches second end

Hub Diameter:

0.312 inches first end

Material:

Steel comp 303 hub

Material:

Steel teeth

Material Specification:

Qq-s-764, type 303, cond a cancelled federal specification 1st material response hub

Material Specification:

Qq-s-766, cl 302, cond a federal specification 2nd material response teeth

Surface Treatment:

Passivate

Style Designator:

Protruding hubs

NSN:

3020-00-020-3920

Item Name:

Gear,antibacklash,spur

Cage Code:

90073

Manufacturer Part Numbers

No other part numbers with same form, fit, and function found.

Part Identification

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

26668

FIIG:

A27300

Concept No.:

App. Key:

Cond. Code:

Status:

Part Materials

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

197339

UFC:

96710

LTL:

65.0

LCL:

WCC:

593

TCC:

SHC:

ACC:

Construction Materials

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Pricing & Availability

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Definition Definition of approved item name (AIN): "Spur Antibacklash Gear"

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.