PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C550Dummy Load,electrical

Caes Mission Systems Llc · NSN 5985-00-539-6125 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-539-6125 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-539-6125. Primary manufacturer part number: C550.
Features
  • Dummy Load,electrical — FSC 5985
  • Waveguide Flange Designation: UG-407/U
  • Voltage Standing Wave Ratio: 1.10
  • Frequency Range Rating: +3.950 TO 5.850 GIGAHERTZ
  • Operating Position: ALL POSITIONS
  • Body Height: 4.125 INCHES MAXIMUM IN
  • Termination Type: WAVEGUIDE FLANGE
  • Voltage Standing Wave Ratio Frequency Range: +3.950 TO 5.850 GIGAHERTZ
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Dummy Load,electrical, cataloged under National Stock Number 5985-00-539-6125, is classified within Federal Supply Class 5985 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Caes Mission Systems Llc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5985-00-539-6125
Primary Part NumberC550
Item NameDummy Load,electrical
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerCaes Mission Systems Llc
StatusCANCELLED
Waveguide Flange DesignationUG-407/U
Voltage Standing Wave Ratio1.10
Frequency Range Rating+3.950 TO 5.850 GIGAHERTZ
Operating PositionALL POSITIONS
Body Height4.125 INCHES MAXIMUM IN
Termination TypeWAVEGUIDE FLANGE
Voltage Standing Wave Ratio Frequency Range+3.950 TO 5.850 GIGAHERTZ
Power Rating2.000 MEGAWATTS AVERAGE
Test Data Document81349-MIL-D-3954 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Specification/standard Data81349--3954/17-01 GOVERNMENT SPECIFICATION
Cooling MethodSELF-COOLED
Style DesignatorWAVEGUIDE MOUNTED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
2530-00-773-5400F3634 INTERCHANGEABLE
Parts Kit,hydraulic Brake Wheel
Federal Mogul Corp Sub Wagner Brake Moog Automotive Div
8105-01-560-6101C550 INTERCHANGEABLE
Bag,tools and Spare Parts
Fluke Corp
Cross-Reference Index
Part NumberManufacturer
C550 Caes Mission Systems Llc (USA)
DA-149/U Joint Electronics Type Designation System (USA)
8212208 Army, United States Department of the Dba Rock Island Arsenal Jmtc (USA)
M3954/17-01 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
H4062F4 Microlab/fxr Llc (USA)
MIL-D-3954/17 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS35892-1 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
8212208 Us Army Aviation and Missile Command (USA)
MIL-DTL-3954/17 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
2530-00-773-5400INTERCHANGEABLE
PARTS KIT,HYDRAULIC BRAKE WHEEL
F3634
8105-01-560-6101INTERCHANGEABLE
BAG,TOOLS AND SPARE PARTS
C550

Frequently Asked Questions

What is NSN 5985-00-539-6125?

NSN 5985-00-539-6125 is a Dummy Load,electrical, manufactured by Caes Mission Systems Llc, classified under FSC 5985 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5985-00-539-6125?

NSN 5985-00-539-6125 has 9 cross-referenced part numbers: C550 (Caes Mission Systems Llc), DA-149/U (Joint Electronics Type Designation System), 8212208 (Army, United States Department of the Dba Rock Island Arsenal Jmtc), M3954/17-01 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), H4062F4 (Microlab/fxr Llc) and 4 more.

What NSN replaces 5985-00-539-6125?

There are 2 known substitutes for 5985-00-539-6125: 2530-00-773-5400, 8105-01-560-6101. Verify interchangeability with system specifications before substitution.

What are the specifications of C550?

Key specifications for C550: Overall Height: 4.125 INCHES MAXIMUM IN; Waveguide Flange Designation: UG-407/U; Voltage Standing Wave Ratio: 1.10; Frequency Range Rating: +3.950 TO 5.850 GIGAHERTZ. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5985-00-539-6125 still in active supply?

NSN 5985-00-539-6125 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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