PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21499Gear Cluster

Aerosonic Llc · NSN 3020-00-939-2623 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-939-2623 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-939-2623. Primary manufacturer part number: 21499.
Features
  • Gear Cluster — FSC 3020
  • 1 verified cross-reference
  • Primary manufacturer: Aerosonic Llc
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
General Description

The Gear Cluster, cataloged under National Stock Number 3020-00-939-2623, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Aerosonic Llc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameGear Cluster
FSC / FSG3020 — No Item Name Available (FSG 30)
ManufacturersAerosonic Llc (CAGE 98810)
Technical Specifications
ParameterValue
NSN3020-00-939-2623
Primary Part Number21499
Item NameGear Cluster
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerAerosonic Llc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
3040-01-034-357521499 INTERCHANGEABLE
Lever,manual Control
Ward Leonard Ct Llc
5360-01-127-107721499 INTERCHANGEABLE
Spring
Sterling Spring Llc
1650-01-179-835921499 INTERCHANGEABLE
Cover,hydraulic Valve
Meggitt North Hollywood Inc
4730-01-185-813721499 INTERCHANGEABLE
Flange,pipe
Leslie Controls, Inc. Dba Leslie Controls Inc
Cross-Reference Index
Part NumberManufacturer
21499 PRIMARY Aerosonic Llc (USA)
Related Parts
3040-01-034-3575INTERCHANGEABLE
LEVER,MANUAL CONTROL
21499
5360-01-127-1077INTERCHANGEABLE
SPRING
21499
1650-01-179-8359INTERCHANGEABLE
COVER,HYDRAULIC VALVE
21499
4730-01-185-8137INTERCHANGEABLE
FLANGE,PIPE
21499

Frequently Asked Questions

What is NSN 3020-00-939-2623?

NSN 3020-00-939-2623 is a Gear Cluster, manufactured by Aerosonic Llc, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-939-2623?

NSN 3020-00-939-2623 has 1 cross-referenced part number: 21499 (Aerosonic Llc).

What NSN replaces 3020-00-939-2623?

There are 4 known substitutes for 3020-00-939-2623: 3040-01-034-3575, 5360-01-127-1077, 1650-01-179-8359 and 1 more. Verify interchangeability with system specifications before substitution.

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