PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A72191Gear,spur

Ballantyne of Omaha Inc. · NSN 3020-00-099-8666 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-099-8666 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-099-8666. Primary manufacturer part number: A72191.
Features
  • Gear,spur — FSC 3020
  • Teeth Quantity: 20
  • Body Style: PLAIN, SOLID
  • Surface Treatment: ANODIZE OVERALL
  • Pitch Diameter: 0.6370 INCHES NOMINAL IN
  • Nominal Distance Between Body Face and Protruding Hub End: 0.251 INCHES FIRST END IN
  • Bore Nominal Diameter: 0.1196 INCHES BOTH ENDS IN
  • Style Designator: PROTRUDING HUB
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Aluminum Alloy 2024 Overall construction
General Description

The Gear,spur, cataloged under National Stock Number 3020-00-099-8666, 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 15 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
NSN3020-00-099-8666
Primary Part NumberA72191
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerBallantyne of Omaha Inc.
StatusACTIVE
Teeth Quantity20
Body StylePLAIN, SOLID
Surface TreatmentANODIZE OVERALL
Pitch Diameter0.6370 INCHES NOMINAL IN
Nominal Distance Between Body Face and Protruding Hub End0.251 INCHES FIRST END IN
Bore Nominal Diameter0.1196 INCHES BOTH ENDS IN
Style DesignatorPROTRUDING HUB
Nominal Outside Diameter0.699 INCHES IN
MaterialALUMINUM ALLOY 2024 OVERALL
Hub Nominal Diameter0.500 INCHES FIRST END IN
Material Document and ClassificationQQ-A-267 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-268 COND T FED SPEC 2ND MATERIAL RESPONSE OVERALL
Surface Treatment Document and ClassificationMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Face Nominal Width0.093 INCHES IN
Hub Style DesignatorPINNED FIRST END
Bore StylePLAIN BOTH ENDS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5950-00-578-55928896600 INTERCHANGEABLE
Transformer,power Autotransforme
Us Army Aviation and Missile Command
6625-00-718-5249186464R91 INTERCHANGEABLE
Meter,replacement
Navistar Intl Corp Truck Br Ohio Plant
3110-01-412-3565 INTERCHANGEABLE
Bearing,ball,annular
Cross-Reference Index
Part NumberManufacturer
A72191 PRIMARY Ballantyne of Omaha Inc. (USA)
72191 Arma Div Ambac Industries Inc
Related Parts
5950-00-578-5592INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
8896600
6625-00-718-5249INTERCHANGEABLE
METER,REPLACEMENT
186464R91
3110-01-412-3565INTERCHANGEABLE
BEARING,BALL,ANNULAR

Frequently Asked Questions

What is NSN 3020-00-099-8666?

NSN 3020-00-099-8666 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 3020-00-099-8666?

NSN 3020-00-099-8666 has 2 cross-referenced part numbers: A72191 (Ballantyne of Omaha Inc.), 72191 (Arma Div Ambac Industries Inc).

What NSN replaces 3020-00-099-8666?

There are 3 known substitutes for 3020-00-099-8666: 5950-00-578-5592, 6625-00-718-5249, 3110-01-412-3565. Verify interchangeability with system specifications before substitution.

What are the specifications of A72191?

Key specifications for A72191: Teeth Quantity: 20; Body Style: PLAIN, SOLID; Surface Treatment: ANODIZE OVERALL; Pitch Diameter: 0.6370 INCHES NOMINAL IN. 15 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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