PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

103901Gear Cluster

Symetrics Industries, Llc Dba Extant Aerospace Div Symetrics Industries Dba Extant Aerospace · NSN 3020-00-126-3019 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-126-3019 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-126-3019. Primary manufacturer part number: 103901.
Features
  • Gear Cluster — FSC 3020
  • Nominal Outside Diameter: 0.6583 INCHES FIRST GEAR IN
  • Design Type: SPUR FIRST GEAR
  • Construction: ASSEMBLED
  • Design Type: SPUR SECOND GEAR
  • Hub Nominal Length: 0.085 INCHES SECOND END IN
  • Material: STEEL CORROSION RESISTING OVERALL
  • Nominal Outside Diameter: 0.208 INCHES SECOND GEAR IN
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Gear Cluster, cataloged under National Stock Number 3020-00-126-3019, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Symetrics Industries, Llc Dba Extant Aerospace Div Symetrics Industries Dba Extant Aerospace. Government technical data includes 12 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-126-3019
Primary Part Number103901
Item NameGear Cluster
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerSymetrics Industries, Llc Dba Extant Aerospace Div Symetrics Industries Dba Extant Aerospace
StatusACTIVE
Nominal Outside Diameter0.6583 INCHES FIRST GEAR IN
Design TypeSPUR FIRST GEAR
ConstructionASSEMBLED
Design TypeSPUR SECOND GEAR
Hub Nominal Length0.085 INCHES SECOND END IN
MaterialSTEEL CORROSION RESISTING OVERALL
Nominal Outside Diameter0.208 INCHES SECOND GEAR IN
Hub Style Designator2 STEPS BOTH ENDS
Nominal Overall Length0.305 INCHES IN
Hub Nominal Length0.063 INCHES BETWEEN SECOND AND THIRD GEAR IN
Hub Nominal Length0.0850 INCHES FIRST END IN
Surface TreatmentPASSIVATE OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
3895-00-128-1257A1022X65 INTERCHANGEABLE
Seal Ring,pump Adap
David Brown Hydraulics Inc Dba Hydreco
4730-00-820-39992JC2409H02 INTERCHANGEABLE
Coupling Half,quick Disconnect
Northrop Grumman Systems Corporation Div Marine Systems
5895-01-341-1658103901 INTERCHANGEABLE
Drive,tuning
Aimtron Systems, Llc
5330-01-344-3873103901 INTERCHANGEABLE
Gasket
Eaton Aerospace Llc Div Fluid and Electrical Distribution Division
3040-01-406-7861103901 INTERCHANGEABLE
Ring,rod,piston
Jered Llc
4820-01-515-941240609-8 PC NO 27 INTERCHANGEABLE
Liner,valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
Cross-Reference Index
Part NumberManufacturer
103901 Astronautics Corporation of America (USA)
103901 PRIMARY Symetrics Industries, Llc Dba Extant Aerospace Div Symetrics Industries Dba Extant Aerospace (USA)
Related Parts
3895-00-128-1257INTERCHANGEABLE
SEAL RING,PUMP ADAP
A1022X65
4730-00-820-3999INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
2JC2409H02
5895-01-341-1658INTERCHANGEABLE
DRIVE,TUNING
103901
5330-01-344-3873INTERCHANGEABLE
GASKET
103901
3040-01-406-7861INTERCHANGEABLE
RING,ROD,PISTON
103901
4820-01-515-9412INTERCHANGEABLE
LINER,VALVE
40609-8 PC NO 27

Frequently Asked Questions

What is NSN 3020-00-126-3019?

NSN 3020-00-126-3019 is a Gear Cluster, manufactured by Symetrics Industries, Llc Dba Extant Aerospace Div Symetrics Industries Dba Extant Aerospace, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-126-3019?

NSN 3020-00-126-3019 has 2 cross-referenced part numbers: 103901 (Astronautics Corporation of America), 103901 (Symetrics Industries, Llc Dba Extant Aerospace Div Symetrics Industries Dba Extant Aerospace).

What NSN replaces 3020-00-126-3019?

There are 6 known substitutes for 3020-00-126-3019: 3895-00-128-1257, 4730-00-820-3999, 5895-01-341-1658 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 103901?

Key specifications for 103901: Nominal Outside Diameter: 0.6583 INCHES FIRST GEAR IN; Design Type: SPUR FIRST GEAR; Construction: ASSEMBLED; Design Type: SPUR SECOND GEAR. 12 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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