PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A72129Gear,spur

Ballantyne of Omaha Inc. · NSN 3020-00-031-2476 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-031-2476 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-031-2476. Primary manufacturer part number: A72129.
Features
  • Gear,spur — FSC 3020
  • Attachment Method: MOUNTING HOLE AND SETSCREWS
  • Surface Treatment: ANODIZE OVERALL
  • Mounting Hole Type and Quantity: 1 TAPERED TRANSVERSELY THROUGH HUB FIRST END
  • Material Document and Classification: QQ-A-354 COND T FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Nominal Outside Diameter: 1.070 INCHES IN
  • Pitch Diameter: 0.9550 INCHES NOMINAL IN
  • Surface Treatment Document and Classification: AN-QQ-A-696 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Aluminum Alloy Overall construction
General Description

The Gear,spur, cataloged under National Stock Number 3020-00-031-2476, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Ballantyne of Omaha Inc.. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-031-2476
Primary Part NumberA72129
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerBallantyne of Omaha Inc.
StatusACTIVE
Attachment MethodMOUNTING HOLE AND SETSCREWS
Surface TreatmentANODIZE OVERALL
Mounting Hole Type and Quantity1 TAPERED TRANSVERSELY THROUGH HUB FIRST END
Material Document and ClassificationQQ-A-354 COND T FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Nominal Outside Diameter1.070 INCHES IN
Pitch Diameter0.9550 INCHES NOMINAL IN
Surface Treatment Document and ClassificationAN-QQ-A-696 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Face Nominal Width0.125 INCHES IN
Body StylePLAIN, SOLID
Hub Nominal Diameter0.375 INCHES BOTH ENDS IN
Style DesignatorPROTRUDING HUBS
MaterialALUMINUM ALLOY OVERALL
Bore StylePLAIN BOTH ENDS
Bore Nominal Diameter0.186 INCHES BOTH ENDS IN
Nominal Distance Between Body Face and Protruding Hub End0.063 INCHES SECOND END IN
Nominal Distance Between Body Face and Protruding Hub End0.188 INCHES FIRST END IN
Hub Style DesignatorPLAIN BOTH ENDS
Pressure Angle20.0000 DEGREES
Teeth Quantity19
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
6240-00-143-6695CL24-120PS INTERCHANGEABLE
Lamp,cartridge
Genisco Filter Corp
5825-00-545-173972129 INTERCHANGEABLE
Shaft,drive,rigid
L3harris Technologies, Inc Div Space & Airborne Systems
9390-00-839-1864801077 INTERCHANGEABLE
Bellows,protection
Borgwarner Pds (anderson), L.l.c.
Cross-Reference Index
Part NumberManufacturer
A72129 PRIMARY Ballantyne of Omaha Inc. (USA)
72129 Arma Div Ambac Industries Inc
Related Parts
6240-00-143-6695INTERCHANGEABLE
LAMP,CARTRIDGE
CL24-120PS
5825-00-545-1739INTERCHANGEABLE
SHAFT,DRIVE,RIGID
72129
9390-00-839-1864INTERCHANGEABLE
BELLOWS,PROTECTION
801077

Frequently Asked Questions

What is NSN 3020-00-031-2476?

NSN 3020-00-031-2476 is a Gear,spur, manufactured by Ballantyne of Omaha Inc., classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-031-2476?

NSN 3020-00-031-2476 has 2 cross-referenced part numbers: A72129 (Ballantyne of Omaha Inc.), 72129 (Arma Div Ambac Industries Inc).

What NSN replaces 3020-00-031-2476?

There are 3 known substitutes for 3020-00-031-2476: 6240-00-143-6695, 5825-00-545-1739, 9390-00-839-1864. Verify interchangeability with system specifications before substitution.

What are the specifications of A72129?

Key specifications for A72129: Attachment Method: MOUNTING HOLE AND SETSCREWS; Surface Treatment: ANODIZE OVERALL; Mounting Hole Type and Quantity: 1 TAPERED TRANSVERSELY THROUGH HUB FIRST END; Material Document and Classification: QQ-A-354 COND T FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 19 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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