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Sprocket Wheel

NSN: 3020-00-831-0254 | Model: 7748531

A toothed wheel whose teeth or sprockets are designed to be engaged with the links of a pitch chain, track, or the like. It is usually used for transmitting power.

NSN Properties and Flags
NATO Stock Number
3020-00-831-0254
DEMIL
NO
Spline Major Diameter
Between 1.5500 inches and 1.5612 inches
Counterbore Diameter
Between 1.995 inches and 2.000 inches
Counterbore Depth
0.188 inches
Outside Diameter
Between 3.915 inches and 3.920 inches
Overall Length
2.438 inches
Spline Quantity
23
Spline Minor Diameter
Between 1.3750 inches and 1.3775 inches
Pitch Diameter
3.599 inches
Face Width
0.343 inches
Design Form
Plain
Bore Type
Involute spline
Spline Pressure Angle In Deg
30.0
Spline Length
2.250 inches
Counterbore Feature
Included
Spline Pitch Diameter
1.4375 inches
Counterbore Location
Bb end
Lightening Hole
Not included
Protruding Hub Characteristic
Stepped
Groove/step Location
Aa end
Belt/chain/film Size For Which Designed
Roller chain
Roller Chain Pitch Type For Which Designed
Single pitch
Teeth Row Quantity
1
Teeth Quantity Per Row
18
Asa Standard Chain Number
50
Hardness Rating Test Method
Not rated
Bore Bearing
Not included
Hub External Keyway
Not included
Tooth Pitch
0.625 inches
Hub End Outside Diameter And Location
2.375 inches bb end
Distance From Outside Flange/rim To Hub End And Location
1.016 inches bb end and 1.019 inches bb end
First Step Face Largest Diameter And Location
2.375 inches aa end
First Step Length And Location
0.500 inches aa end
Second Step Length And Location
0.578 inches aa end and 0.581 inches aa end
Hub End Outside Diameter And Location
1.995 inches aa end and 2.000 inches aa end
Special Features
Bb hub end tapered, 0.376 in. Taper lg, 2.250 in. Dia, small end of taper
Material
Steel, qq-s-681, class 120-95
Material
Steel comp 120-95
Material Specification
Qq-s-681, class 120-95 federal specification single material response
Surface Treatment
Phosphate
Style Designator
Plain
Surface Treatment
Phosphate

Pricing and Availability

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NSN 3020-00-831-0254 Datasheet

Supply Class (FSC):
Transmission Chain Sprockets Pulleys Gears
Cross Reference:
  • 7748531
Cage Codes:
  • Army, United States Department Of (CAGE 19204)
Schedule B & Trade:
  • Schedule B: 8483901000 (NAICS 333613)

    Chain sprockets and parts thereof

  • SITC: 74890

    Parts, n.E.S., for transmission shafts and cranks, bearing housings, gears, gearing, ball screws, gear boxes, flywheels and pulleys, clutches, etc.

  • End Use: 21180

    Industrial machines, other

Identification:
HMIC

N - Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

PMIC

U - Precious metal content is unknown

CRITL

- The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Freight Information:
  • NMFC:

    117020 - Chain and sprocket drives/wheels

  • WCC:

    593 - Motors and parts, (machinery and parts),(less than 35 feet)

  • SHC:

    9 - Other or no special handling required (sh)

  • ADC:

    A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.

  • LCL:

    S - 60.0

  • LTL:

    S - 60.0

  • ACC:

    V - Trailers, vehicles, machinery, shop and warehouse equipment and supplies including special tools and equipment, ground servicing

  • TCC:

    Z - No special type of cargo code applicable

Questions & Answers:
What are the historical prices recorded for this stock number?
No pre-dated pricing for this NSN could be found.
Does NSN 3020-00-831-0254 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Republic Of Korea
What is the NIIN of NSN 3020-00-831-0254?
008310254 or 00-831-0254
Does NSN 3020-00-831-0254 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 3020-00-831-0254?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Jan 01, 1962