PartsTable TECHNICAL DATA SHEET
NSN 3020-01-431-8929Government record, cited

Gear, Spur3020-01-431-8929

NSN 3020-01-431-8929 · NIIN 014318929 · Part number 12510583
U S Army Tank Automotive Command Amsta-Im-Mm · FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain · FSG 30 — Mechanical Power Transmission Equipment · CAGE 19207
Government record, cited
NSN 3020-01-431-8929 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-431-8929. Manufacturer of record part number: 12510583.
Also searched as  3020-01-431-8929 · 3020014318929 · NIIN 014318929 · 01-431-8929 · FSC 3020 Gears, Pulleys, Sprockets, and Transmission Chain · CAGE 19207 · 12510583 · 715551
Nearby stock numbers  ·
Features
  • Gear,spur — FSC 3020
  • Teeth Quantity: 21
  • Pitch Diameter: 3.5000 INCHES NOMINAL IN
  • Nominal Outside Diameter: 3.950 INCHES IN
  • Pressure Angle: 25.0000 DEGREES
  • Face Nominal Width: 2.430 INCHES IN
  • 2 manufacturer part numbers on file
  • Manufacturer of record: U S Army Tank Automotive Command Amsta-Im-Mm
Identification
  • NSN: 3020-01-431-8929
  • NIIN: 014318929
  • FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
  • FSG: 30 — Mechanical Power Transmission Equipment
  • Primary part number: 12510583
  • Manufacturer: U S Army Tank Automotive Command Amsta-Im-Mm
General Description

The Gear,spur, cataloged under National Stock Number 3020-01-431-8929, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-01-431-8929
Primary Part Number12510583
Item NameGear,spur
FSC / FSG3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain
ManufacturerU S Army Tank Automotive Command Amsta-Im-Mm
StatusACTIVE
Teeth Quantity21
Pitch Diameter3.5000 INCHES NOMINAL IN
Nominal Outside Diameter3.950 INCHES IN
Pressure Angle25.0000 DEGREES
Face Nominal Width2.430 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
715551 Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
12510583 PRIMARY U S Army Tank Automotive Command Amsta-Im-Mm (USA)
No interchangeability data on file.
Other items in FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3020-00-000-0091
GEAR,SPUR
3020-00-001-0027
3020-00-001-0027 · Item name not on file
3020-00-001-0028
3020-00-001-0028 · Item name not on file
3020-00-001-0063
3020-00-001-0063 · Item name not on file
3020-00-001-0064
3020-00-001-0064 · Item name not on file
3020-00-001-0066
3020-00-001-0066 · Item name not on file
3020-00-001-0071
3020-00-001-0071 · Item name not on file
3020-00-001-0072
3020-00-001-0072 · Item name not on file

Frequently Asked Questions

What is NSN 3020-01-431-8929?

NSN 3020-01-431-8929 is a Gear,spur, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.

What part numbers are listed for NSN 3020-01-431-8929?

NSN 3020-01-431-8929 has 2 manufacturer part numbers on file: 715551 (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic), 12510583 (U S Army Tank Automotive Command Amsta-Im-Mm).

What are the specifications of 12510583?

Key specifications for 12510583: Teeth Quantity: 21; Pitch Diameter: 3.5000 INCHES NOMINAL IN; Nominal Outside Diameter: 3.950 INCHES IN; Special Features: USED ON HERCULES. 5 specifications are documented in the U.S. Government catalog.

Is NSN 3020-01-431-8929 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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