PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

210861PC9Gear,spur

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 3020-00-378-6251 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-378-6251 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-378-6251. Primary manufacturer part number: 210861PC9.
Features
  • Gear,spur — FSC 3020
  • Teeth Quantity: 108
  • Pitch Diameter: 3.3735 INCHES MINIMUM AND 3.3750 INCHES MAXIMUM IN
  • Material Document and Classification: QQ-A-250/4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Bore Style: PLAIN BOTH ENDS
  • Body Style: PLAIN, SOLID
  • Tooth Form: STANDARD
  • Style Designator: HUBLESS
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 3020-00-378-6251, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-378-6251
Primary Part Number210861PC9
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Teeth Quantity108
Pitch Diameter3.3735 INCHES MINIMUM AND 3.3750 INCHES MAXIMUM IN
Material Document and ClassificationQQ-A-250/4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Bore StylePLAIN BOTH ENDS
Body StylePLAIN, SOLID
Tooth FormSTANDARD
Style DesignatorHUBLESS
Mounting Hole Nominal Diameter0.169 INCHES AXIALLY THROUGH BODY FIRST END IN
Nominal Outside Diameter3.436 INCHES IN
MaterialALUMINUM ALLOY 2024 OVERALL
Bore Nominal Diameter1.750 INCHES BOTH ENDS IN
Face Nominal Width0.187 INCHES IN
Pressure Angle14.5000 DEGREES
Bolt Hole Circle Nominal Diameter1.124 INCHES AXIALLY THROUGH BODY FIRST END IN
Mounting Hole Type and Quantity3 PLAIN AXIALLY THROUGH BODY FIRST END
Attachment MethodMOUNTING HOLE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
1660-00-730-015021086-1 INTERCHANGEABLE
Converter,liquid Oxygen
Mission Systems Orchard Park Inc
5975-01-200-213821086-1 INTERCHANGEABLE
Mounting Base,electrical Equipme
Hutchinson Aerospace & Industry, Inc. Dba Barry Wright Corp
Cross-Reference Index
Part NumberManufacturer
210861 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
210861PC9 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
Related Parts
1660-00-730-0150INTERCHANGEABLE
CONVERTER,LIQUID OXYGEN
21086-1
5975-01-200-2138INTERCHANGEABLE
MOUNTING BASE,ELECTRICAL EQUIPME
21086-1

Frequently Asked Questions

What is NSN 3020-00-378-6251?

NSN 3020-00-378-6251 is a Gear,spur, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-378-6251?

NSN 3020-00-378-6251 has 2 cross-referenced part numbers: 210861 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 210861PC9 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).

What NSN replaces 3020-00-378-6251?

There are 2 known substitutes for 3020-00-378-6251: 1660-00-730-0150, 5975-01-200-2138. Verify interchangeability with system specifications before substitution.

What are the specifications of 210861PC9?

Key specifications for 210861PC9: Teeth Quantity: 108; Pitch Diameter: 3.3735 INCHES MINIMUM AND 3.3750 INCHES MAXIMUM IN; Material Document and Classification: QQ-A-250/4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Bore Style: PLAIN BOTH ENDS. 16 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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