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Worm Wheel Gear

NSN: 3020-00-272-6053 | Model: 681600

A gear, cylindrical in form, with spiral teeth designed to mesh with the thread forms of a gear (1), worm. See also gear, antibacklash, worm wheel.

NSN Properties and Flags
NATO Stock Number
Body Style
Plain, solid
Pitch Diameter
1.9098 inches
Teeth Quantity
Face Type
Bore Style
W/ keyway both ends
Outside Diameter
2.0257 inches
0.688 inches
Tooth Direction
Throat Radius
0.163 inches
Mating Thread Lead Quantity
Pressure Angle
20.0000 degrees
Helix Angle
22.9969 degrees
Distance Between Body Face And Protruding Hub End
0.438 inches first end
Face Width
0.250 inches
Bore Diameter
0.377 inches both ends
Keyway Width
0.093 inches both ends
Distance From Bore Center To Keyway Bottom
0.2464 inches both ends
Hub Style Designator
Plain first end
Hub Diameter
0.875 inches first end
Copper alloy
Style Designator
Protruding hub

Inventory Check

The last inventory check on this NSN was done on 01/14/2022. Due to rapid changes in inventory this may not be the current stock qty.

  • New: 140
  • New Surplus: 8

Pricing and Availability

Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.

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NSN 3020-00-272-6053 Datasheet

Supply Class (FSC):
Transmission Chain Sprockets Pulleys Gears
Cross Reference:
  • 681600
Cage Codes:
  • Navair and Navsea Managed (CAGE 10001)
Schedule B & Trade:
  • Schedule B: 8483409000 (NAICS 333612)

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

  • SITC: 74840

    Gears and gearing; ball screws; gear boxes and other speed changers (including torque converters)

  • End Use: 21180

    Industrial machines, other


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


U - Precious metal content is unknown


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

Freight Information:
  • NMFC:

    197337 - Wheels cog/gear/pinion/sprock

  • 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:

    Q - 70.0

  • ACC:

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

  • LTL:

    W - Rating variable

  • TCC:

    Z - No special type of cargo code applicable

NSN Management Codes:
  • SOS
  • AAC
  • Quantity per pack
  • Unit of Measure
  • Shelf Life
  • Classification Control
  • Repariability

Questions & Answers:

What are the historical prices recorded for this stock number?
Historical data shows pricing from $41.72 to $69.53..
Does NSN 3020-00-272-6053 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Canada, and Greece
What is the NIIN of NSN 3020-00-272-6053?
002726053 or 00-272-6053
Does NSN 3020-00-272-6053 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 3020-00-272-6053?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Jan 01, 1963