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FSC 3020 | Transmission Chain Sprockets Pulleys Gears
121012A

Model: 121012A

Helical Gear

Special Features:

Uletter c marked on tooth 40 degrees ccw from centerline @of keyway, letter x marked on face 6-1/2 tooth spaces cw from letter c, three no. 8-32 nc by 1/4 in. Deep holes on 1-13/16 in. Diameter bolt circle equally @spaced on 2nd end of gear

Properties:

Body Style

Plain, solid

Pitch Diameter

2.3290 inches

Teeth Quantity

Bore Style

10a w/ keyway both ends

Bore Style

W/ keyway both ends

Outside Diameter

2.4825 inches

Teeth Type

Single helix

Tooth Form

Standard

Tooth Direction

Left

Pressure Angle

14.5000 degrees

Helix Angle

31.0000 degrees

Distance Between Body Face And Protruding Hub End

0.328 inches first end

Face Width

0.625 inches

Bore Diameter

1.3768 inches first end

Keyway Width

0.189 inches both ends

Distance From Bore Center To Keyway Bottom

0.7846 inches first end

Hub Style Designator

Plain first end

Hub Diameter

1.750 inches first end

Material

Steel comp 1140

Material Specification

Fed standard 66 federal standard single material response

Style Designator

Protruding hub

NSN

3020-00-249-9949

Part Number

121012A

Description

Gear,helical

CAGE

64104

A gear, cylindrical in form, with teeth on the outer surface at an angle to the axis of the gear. See also gear, antibacklash, helical:

Part 121012A NSN 3020-00-249-9949

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

05464

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:

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:

Construction Materials

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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