PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-S-25879Switch,radio Frequency Transmiss

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5985-00-097-7374 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-097-7374 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-097-7374. Primary manufacturer part number: MIL-S-25879.
Features
  • Switch,radio Frequency Transmiss — FSC 5985
  • Minimum Crosstalk Rating in Decibels: 40.0 SINGLE
  • Rf Power Handling Capability: 100.0 WATTS AVERAGE FIRST
  • Switch Type: NONTRANSFER
  • Insertion Loss in Decibels: 0.20 SINGLE
  • Operating Temp Range: -55.0 TO 85.0 CELSIUS DEGC
  • Switching Time: 20.0 MILLISECONDS MS
  • Actuator Voltage in Volts: 28.0 NOMINAL
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
  • Applications requiring Aluminum Alloy Body construction
General Description

The Switch,radio Frequency Transmiss, cataloged under National Stock Number 5985-00-097-7374, 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 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5985-00-097-7374
Primary Part NumberMIL-S-25879
Item NameSwitch,radio Frequency Transmiss
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Minimum Crosstalk Rating in Decibels40.0 SINGLE
Rf Power Handling Capability100.0 WATTS AVERAGE FIRST
Switch TypeNONTRANSFER
Insertion Loss in Decibels0.20 SINGLE
Operating Temp Range-55.0 TO 85.0 CELSIUS DEGC
Switching Time20.0 MILLISECONDS MS
Actuator Voltage in Volts28.0 NOMINAL
Throw Quantity2
Switch Operation SequenceMAKES BEFORE BREAKS
Body StyleIRREGULAR
Connector End DesignFEMALE
Pole Quantity1
Mounting Facility Type and Quantity1 BASE
Rf Power Handling Capability4.5 KILOWATTS PEAK SECOND
Actuator Current Type and Rating in Amps1.0 DC NOMINAL
Rf Maximum Voltage Rating1.0 KILOVOLTS PEAK
Voltage Standing Wave Ratio1.20 SINGLE
Actuator Operating MethodRELAY
MaterialALUMINUM ALLOY BODY
Coupling Position Quantity3
Terminal Type and Quantity1 CONNECTOR, RECEPTACLE AND 3 RECEPTACLE, COAXIAL
Coaxial Connector Series DesignationN
Frequency Rating0.0 GIGAHERTZ MINIMUM AND 1.25 GIGAHERTZ MAXIMUM SINGLE FREQUENCY OPERATING
Test Data Document81349-MIL-S-25879 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.).
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5330-00-119-717450010 INTERCHANGEABLE
Gasket
Hamilton Sundstrand Corporation Dba Collins Aerospace
4320-00-135-6362500-10 INTERCHANGEABLE
Parts Kit,reciprocating Pump
Walchem Corp
4730-00-196-1464A733S-1CFG INTERCHANGEABLE
Nipple,pipe
American Society for Testing and Materials Dba Astm International
5977-00-366-8341 INTERCHANGEABLE
Holder,electrical Contact Brush
3655-00-421-4342500-10 INTERCHANGEABLE
Tank,storage,liquid Argon-Nitrog
Marshall Excelsior Co
5905-00-577-7130 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
2520-00-762-148750-010 INTERCHANGEABLE
Shaft Assembly
Funk Mfg Co Sub of Deere and Co
5985-00-788-6961 INTERCHANGEABLE
Switch,radio Frequency Transmiss
5985-00-837-9973CS319 INTERCHANGEABLE
Switch,radio Frequency Transmiss
Meggitt Safety Systems Inc
4520-00-980-8237 INTERCHANGEABLE
Heating Element,electrical,nonim
Cross-Reference Index
Part NumberManufacturer
MIL-S-25879 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-25879 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
SA-521A/A W/O MTG Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
GS839L2 Northrop Grumman Systems Corporation (USA)
50010 Fisica Applied Technologies, Inc. Div Datron Advanced Technologies (USA)
SA-521A/A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
SA521A/A Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division (USA)
5985PL1151891 Jednolity Indeks Materialowy - Uniform Material Index (POL)
13-50-04010 Meggitt Safety Systems Inc (USA)
SA521A/A Eaton Motor Site (USA)
S-2479 Rlc Electronics, Inc (USA)
Related Parts
5330-00-119-7174INTERCHANGEABLE
GASKET
50010
4320-00-135-6362INTERCHANGEABLE
PARTS KIT,RECIPROCATING PUMP
500-10
4730-00-196-1464INTERCHANGEABLE
NIPPLE,PIPE
A733S-1CFG
5977-00-366-8341INTERCHANGEABLE
HOLDER,ELECTRICAL CONTACT BRUSH
3655-00-421-4342INTERCHANGEABLE
TANK,STORAGE,LIQUID ARGON-NITROG
500-10
5905-00-577-7130INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
2520-00-762-1487INTERCHANGEABLE
SHAFT ASSEMBLY
50-010
5985-00-788-6961INTERCHANGEABLE
SWITCH,RADIO FREQUENCY TRANSMISS
5985-00-837-9973INTERCHANGEABLE
SWITCH,RADIO FREQUENCY TRANSMISS
CS319
4520-00-980-8237INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,NONIM
5985-01-129-4617INTERCHANGEABLE
DUMMY LOAD,ELECTRICAL
8050-0011
7510-01-160-4322INTERCHANGEABLE
RIBBON,INKING
803-020025-021

Frequently Asked Questions

What is NSN 5985-00-097-7374?

NSN 5985-00-097-7374 is a Switch,radio Frequency Transmiss, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5985 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5985-00-097-7374?

NSN 5985-00-097-7374 has 11 cross-referenced part numbers: MIL-S-25879 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-25879 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), SA-521A/A W/O MTG (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), GS839L2 (Northrop Grumman Systems Corporation), 50010 (Fisica Applied Technologies, Inc. Div Datron Advanced Technologies) and 6 more.

What NSN replaces 5985-00-097-7374?

There are 12 known substitutes for 5985-00-097-7374: 5330-00-119-7174, 4320-00-135-6362, 4730-00-196-1464 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-S-25879?

Key specifications for MIL-S-25879: Minimum Crosstalk Rating in Decibels: 40.0 SINGLE; Rf Power Handling Capability: 100.0 WATTS AVERAGE FIRST; Switch Type: NONTRANSFER; Insertion Loss in Decibels: 0.20 SINGLE. 27 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5985-00-097-7374 still in active supply?

NSN 5985-00-097-7374 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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