PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

100850Gear Assembly

Astronautics Corporation of America · NSN 3020-00-070-4977 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-070-4977 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-070-4977. Primary manufacturer part number: 100850.
Features
  • Gear Assembly — FSC 3020
  • General Characteristics Item Description: SPUR GEAR 2;TORSION SPRING 1;SHOULDERED COLLAR 1;SETSCREW 2;SPRING PIN 1
  • 1 verified cross-reference
  • Primary manufacturer: Astronautics Corporation of America
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
General Description

The Gear Assembly, cataloged under National Stock Number 3020-00-070-4977, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Astronautics Corporation of America. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN3020-00-070-4977
Primary Part Number100850
Item NameGear Assembly
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerAstronautics Corporation of America
StatusACTIVE
General Characteristics Item DescriptionSPUR GEAR 2;TORSION SPRING 1;SHOULDERED COLLAR 1;SETSCREW 2;SPRING PIN 1
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
3805-00-477-8262 INTERCHANGEABLE
Plate,keeper Right
4810-00-598-2820516256 INTERCHANGEABLE
Valve,linear,directional Control
Hamilton Sundstrand Corporation Dba Collins Aerospace
5998-00-943-7390100850 INTERCHANGEABLE
Circuit Card Assembly
Crane Electronics, Inc.
1680-01-221-2571100850-1 INTERCHANGEABLE
Harness Assembly,su
Bae Systems Land & Armaments L.p.
4110-01-539-3299100850 INTERCHANGEABLE
Lid Assembly
Doubleday Acquisitions, Llc Dba Double Day Acquisitions Llc
6530-01-622-388710-0850 INTERCHANGEABLE
Exerciser,wrist
Fabrication Enterprises, Inc. Dba Fabrication Enterprises Inc
Cross-Reference Index
Part NumberManufacturer
100850 PRIMARY Astronautics Corporation of America (USA)
Related Parts
3805-00-477-8262INTERCHANGEABLE
PLATE,KEEPER RIGHT
4810-00-598-2820INTERCHANGEABLE
VALVE,LINEAR,DIRECTIONAL CONTROL
516256
5998-00-943-7390INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
100850
1680-01-221-2571INTERCHANGEABLE
HARNESS ASSEMBLY,SU
100850-1
4110-01-539-3299INTERCHANGEABLE
LID ASSEMBLY
100850
6530-01-622-3887INTERCHANGEABLE
EXERCISER,WRIST
10-0850

Frequently Asked Questions

What is NSN 3020-00-070-4977?

NSN 3020-00-070-4977 is a Gear Assembly, manufactured by Astronautics Corporation of America, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-070-4977?

NSN 3020-00-070-4977 has 1 cross-referenced part number: 100850 (Astronautics Corporation of America).

What NSN replaces 3020-00-070-4977?

There are 6 known substitutes for 3020-00-070-4977: 3805-00-477-8262, 4810-00-598-2820, 5998-00-943-7390 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 100850?

Key specifications for 100850: General Characteristics Item Description: SPUR GEAR 2;TORSION SPRING 1;SHOULDERED COLLAR 1;SETSCREW 2;SPRING PIN 1; End Item Identification: 6610000342500. 2 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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