PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5903-105LAsymmetry Brake

Thomas Instrument, Incorporated · NSN 1680-01-525-8920 · FSC 1680 · No Item Name Available
Verified by PartsTable
NSN 1680-01-525-8920 — this item is cataloged by the U.S. Government under National Stock Number 1680-01-525-8920. Primary manufacturer part number: 5903-105L.
Features
  • Asymmetry Brake — FSC 1680
  • Criticality Code Justification: FEAT
  • 4 verified cross-references
  • Primary manufacturer: Thomas Instrument, Incorporated
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Asymmetry Brake, cataloged under National Stock Number 1680-01-525-8920, is classified within Federal Supply Class 1680 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is Thomas Instrument, Incorporated. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, 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
NSN1680-01-525-8920
Primary Part Number5903-105L
Item NameAsymmetry Brake
FSC / FSG1680 / 16 — No Item Name Available
ManufacturerThomas Instrument, Incorporated
StatusACTIVE
Criticality Code JustificationFEAT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
3110-00-808-8104BACB10BA35PP INTERCHANGEABLE
Bearing,ball,annular
Mpb Corp Div Timken Super Precision
3110-01-049-0691BACB10BA25PP INTERCHANGEABLE
Bearing,ball,annular
The Boeing Company Div Defense
Cross-Reference Index
Part NumberManufacturer
5903-105K Thomas Instrument, Incorporated (USA)
4C95003-105K Lockheed Martin Corp (USA)
5903-105L PRIMARY Thomas Instrument, Incorporated (USA)
4C95003-105L Lockheed Martin Corp (USA)
Related Parts
3110-00-808-8104INTERCHANGEABLE
BEARING,BALL,ANNULAR
BACB10BA35PP
3110-01-049-0691INTERCHANGEABLE
BEARING,BALL,ANNULAR
BACB10BA25PP

Frequently Asked Questions

What is NSN 1680-01-525-8920?

NSN 1680-01-525-8920 is a Asymmetry Brake, manufactured by Thomas Instrument, Incorporated, classified under FSC 1680 (No Item Name Available). Status: active.

What are the part numbers for NSN 1680-01-525-8920?

NSN 1680-01-525-8920 has 4 cross-referenced part numbers: 5903-105K (Thomas Instrument, Incorporated), 4C95003-105K (Lockheed Martin Corp), 5903-105L (Thomas Instrument, Incorporated), 4C95003-105L (Lockheed Martin Corp).

What NSN replaces 1680-01-525-8920?

There are 2 known substitutes for 1680-01-525-8920: 3110-00-808-8104, 3110-01-049-0691. Verify interchangeability with system specifications before substitution.

What are the specifications of 5903-105L?

Key specifications for 5903-105L: Criticality Code Justification: FEAT; Special Features: FLAP/SLAT ACTUATION CRITICAL TO OPERATION OF AIRCRAFT; End Item Identification: C-5 ACFT. 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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