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FSC 3020 | Transmission Chain Sprockets Pulleys Gears
1856120

Model: 1856120

Spur Antibacklash Gear

Properties:

Attachment Method

Mounting hole

Pitch Diameter

1.2500 inches

Teeth Quantity

Bore Style

Plain both ends

Backlash Designation

Grade e

Mounting Hole Thread Series Designator

Unc transversely through hub, first end

Mounting Hole Thread Size

0.086 inches transversely through hub, first end

Mounting Hole Type And Quantity

1 threaded transversely through hub, first end

Outside Diameter

1.2916 inches

Tooth Form

Standard

Pressure Angle

20.0000 degrees

Distance Between Body Face And Protruding Hub End

0.250 inches first end

Face Width

0.125 inches

Bore Diameter

0.090 inches both ends

Hub Style Designator

Plain first end

Hub Diameter

0.375 inches first end

Precision Classification

Quality number 10

Material

Stainless steel

Surface Treatment

Passivate

Surface Treatment Specification

Qq-p-35 federal specification single treatment response

Style Designator

Protruding hub

NSN

3020-01-070-7909

Part Number

1856120

Description

Gear,antibacklash,spur

CAGE

03956

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.

Part 1856120 NSN 3020-01-070-7909

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

26668

FIIG:

A27300

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

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

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

0.1000lbs

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

197339

UFC:

96710

LTL:

65.0

LCL:

WCC:

593

TCC:

SHC:

ACC:

Trailers/Vehicles

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Schedule B and Export

Schedule B: 8483409000
SITC: 74840
End Use: Industrial machines, other
NAICS: 333612
USDA: 1

Freight Class: Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements entered separately