PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4C91001-101BGearbox Assembly,aircraft

Lockheed Martin Corp · NSN 1680-00-435-8801 · FSC 1680 · No Item Name Available
Verified by PartsTable
NSN 1680-00-435-8801 — this item is cataloged by the U.S. Government under National Stock Number 1680-00-435-8801. Primary manufacturer part number: 4C91001-101B.
Features
  • Gearbox Assembly,aircraft — FSC 1680
  • Reference Number Differentiating Characteristics: SOURCE CONTROL DWG NO. 4C91001-101B
  • 3 verified cross-references
  • Primary manufacturer: Lockheed Martin Corp
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Gearbox Assembly,aircraft, cataloged under National Stock Number 1680-00-435-8801, is classified within Federal Supply Class 1680 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is Lockheed Martin Corp. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1680-00-435-8801
Primary Part Number4C91001-101B
Item NameGearbox Assembly,aircraft
FSC / FSG1680 / 16 — No Item Name Available
ManufacturerLockheed Martin Corp
StatusACTIVE
Reference Number Differentiating CharacteristicsSOURCE CONTROL DWG NO. 4C91001-101B
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-107-7557210SZ INTERCHANGEABLE
Bearing,ball,annular
Skf Usa Inc.
3030-00-357-550615599206 INTERCHANGEABLE
Belt,v
General Motors Llc Dba General Motors Llc
4710-00-596-3975CU-591 INTERCHANGEABLE
Tube Assembly,metal
Aerco International, Inc. Dba Aerco International Inc
6105-00-913-8381 INTERCHANGEABLE
Parts Kit,electric Motor
4420-00-969-0482593 INTERCHANGEABLE
Riser Assembly
Aerco International, Inc. Dba Aerco International Inc
5985-01-021-49318494BOPTION001 INTERCHANGEABLE
Attenuator,variable
Keysight Technologies Inc
3040-01-152-1709 INTERCHANGEABLE
Cylinder,hydraulic Accumulator
6625-01-181-82169510 INTERCHANGEABLE
Counter,electronic,digital Reado
Astronics Test Systems Inc
5340-01-480-08269510 INTERCHANGEABLE
Shield,expansion
Powers Fasteners, Inc.
5985-01-483-61089510 INTERCHANGEABLE
Dummy Load,electrical
Antenna & Radome Research Associates Corp Dba Arra Inc Div Arra Inc
Cross-Reference Index
Part NumberManufacturer
4C91001-101B Lockheed Martin Corp (USA)
218-1B Safe Flight Instrument, Llc (USA)
9510 Fl Aerospace Corp Janitrol Aero Div/general Design (USA)
Related Parts
3110-00-107-7557INTERCHANGEABLE
BEARING,BALL,ANNULAR
210SZ
3030-00-357-5506INTERCHANGEABLE
BELT,V
15599206
4710-00-596-3975INTERCHANGEABLE
TUBE ASSEMBLY,METAL
CU-591
6105-00-913-8381INTERCHANGEABLE
PARTS KIT,ELECTRIC MOTOR
4420-00-969-0482INTERCHANGEABLE
RISER ASSEMBLY
593
5985-01-021-4931INTERCHANGEABLE
ATTENUATOR,VARIABLE
8494BOPTION001
3040-01-152-1709INTERCHANGEABLE
CYLINDER,HYDRAULIC ACCUMULATOR
6625-01-181-8216INTERCHANGEABLE
COUNTER,ELECTRONIC,DIGITAL READO
9510
5340-01-480-0826INTERCHANGEABLE
SHIELD,EXPANSION
9510
5985-01-483-6108INTERCHANGEABLE
DUMMY LOAD,ELECTRICAL
9510
6625-01-493-6249INTERCHANGEABLE
PROBE,TEST
5895-01-514-8184INTERCHANGEABLE
ACTIVE HEAD
9510

Frequently Asked Questions

What is NSN 1680-00-435-8801?

NSN 1680-00-435-8801 is a Gearbox Assembly,aircraft, manufactured by Lockheed Martin Corp, classified under FSC 1680 (No Item Name Available). Status: active.

What are the part numbers for NSN 1680-00-435-8801?

NSN 1680-00-435-8801 has 3 cross-referenced part numbers: 4C91001-101B (Lockheed Martin Corp), 218-1B (Safe Flight Instrument, Llc), 9510 (Fl Aerospace Corp Janitrol Aero Div/general Design).

What NSN replaces 1680-00-435-8801?

There are 12 known substitutes for 1680-00-435-8801: 3110-00-107-7557, 3030-00-357-5506, 4710-00-596-3975 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4C91001-101B?

Key specifications for 4C91001-101B: Part Name Assigned by Controlling Agency: MANUFACTURERS SUGGESTED NAME - CONTROL COLUMN STICK SHAKER; Reference Number Differentiating Characteristics: SOURCE CONTROL DWG NO. 4C91001-101B; Special Features: T.O. 5F19-6-3. 3 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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