PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

643684Synchro,transmitter

Lockheed Martin Corporation Div Rms - Mitchel Field · NSN 5990-00-337-1303 · FSC 5990 · No Item Name Available
Verified by PartsTable
NSN 5990-00-337-1303 — this item is cataloged by the U.S. Government under National Stock Number 5990-00-337-1303. Primary manufacturer part number: 643684.
Features
  • Synchro,transmitter — FSC 5990
  • Frequency in Hertz: 400.0 NOMINAL
  • Fragility Factor: MODERATELY RUGGED
  • 1 verified cross-reference
  • Primary manufacturer: Lockheed Martin Corporation Div Rms - Mitchel Field
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Synchro,transmitter, cataloged under National Stock Number 5990-00-337-1303, is classified within Federal Supply Class 5990 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Lockheed Martin Corporation Div Rms - Mitchel Field. Government technical data includes 2 verified specifications, 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5990-00-337-1303
Primary Part Number643684
Item NameSynchro,transmitter
FSC / FSG5990 / 59 — No Item Name Available
ManufacturerLockheed Martin Corporation Div Rms - Mitchel Field
StatusACTIVE
Frequency in Hertz400.0 NOMINAL
Fragility FactorMODERATELY RUGGED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5920-00-170-423613235191-8 INTERCHANGEABLE
Fuse,cartridge
Us Army Aviation and Missile Command
Cross-Reference Index
Part NumberManufacturer
643684 PRIMARY Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
Related Parts
5920-00-170-4236INTERCHANGEABLE
FUSE,CARTRIDGE
13235191-8

Frequently Asked Questions

What is NSN 5990-00-337-1303?

NSN 5990-00-337-1303 is a Synchro,transmitter, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 5990 (No Item Name Available). Status: active.

What are the part numbers for NSN 5990-00-337-1303?

NSN 5990-00-337-1303 has 1 cross-referenced part number: 643684 (Lockheed Martin Corporation Div Rms - Mitchel Field).

What NSN replaces 5990-00-337-1303?

There is 1 known substitute for 5990-00-337-1303: 5920-00-170-4236. Verify interchangeability with system specifications before substitution.

What are the specifications of 643684?

Key specifications for 643684: Frequency in Hertz: 400.0 NOMINAL; Fragility Factor: MODERATELY RUGGED. 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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