PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

LT4K499Coil,radio Frequency

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5950-01-135-6818 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-135-6818 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-135-6818. Primary manufacturer part number: LT4K499.
Features
  • Coil,radio Frequency — FSC 5950
  • DC Resistance Rating in Ohms: 0.070 SINGLE COMPONENT SINGLE WINDING
  • Rating Method: ELECTRICAL SINGLE COMPONENT SINGLE WINDING
  • Quality Factor: 60 MINIMUM SINGLE COMPONENT SINGLE WINDING
  • Maximum Operating Temp: 125.0 CELSIUS DEGC
  • Inductance Rating: 0.18 MICROHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING
  • Test Data Document: 81349-MIL-C-15305 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.).
  • Body Height: 0.200 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Coil,radio Frequency, cataloged under National Stock Number 5950-01-135-6818, is classified within Federal Supply Class 5950 (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 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 5 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
NSN5950-01-135-6818
Primary Part NumberLT4K499
Item NameCoil,radio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
DC Resistance Rating in Ohms0.070 SINGLE COMPONENT SINGLE WINDING
Rating MethodELECTRICAL SINGLE COMPONENT SINGLE WINDING
Quality Factor60 MINIMUM SINGLE COMPONENT SINGLE WINDING
Maximum Operating Temp125.0 CELSIUS DEGC
Inductance Rating0.18 MICROHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING
Test Data Document81349-MIL-C-15305 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.).
Body Height0.200 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN
Features ProvidedTINNED WIRE LEADS
Hazardous Locations/environmental ProtectionVIBRATION RESISTANT
Reliability IndicatorNOT ESTABLISHED
Inclosure TypeFULLY INCLOSED
Winding Conductor Size0.02010 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE WINDING IN
Specification/standard Data96906-MS21422 GOVERNMENT STANDARD
Winding Operating Current1.6 AMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
Mounting MethodTERMINAL SINGLE GROUP
Core ConstructionS0LID SINGLE COMPONENT
Terminal Type and Quantity2 WIRE LEAD
Coil Form TypeSOLID SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5970-00-322-66559204 INTERCHANGEABLE
Insulator,bushing
Te Connectivity Corporation
2825-00-446-93219204 INTERCHANGEABLE
Bushing with Pin
Northrop Grumman Systems Corporation Div Marine Systems
4820-00-480-179821324 INTERCHANGEABLE
Valve,expansion
Schneider Metal Mfg Co Inc Ross Temp Div
9540-00-595-8624 INTERCHANGEABLE
Angle,structural
5945-00-602-4009C-4088 INTERCHANGEABLE
Relay,electromagnetic
Ge Aviation Systems Llc Dba Ge Aviation Systems Llc
6145-00-661-0191 INTERCHANGEABLE
Cable,radio Frequency
4920-01-016-30609-204 INTERCHANGEABLE
Power Monitor
Automation Products Group, Inc.
7035-01-110-5739 INTERCHANGEABLE
Carrying Case,modul
5963-01-134-98905196430 INTERCHANGEABLE
Electronic Module,standardized
Naval Sea Systems Command
3110-01-275-3405BB-18-43 INTERCHANGEABLE
Bearing,ball,annular
Itw Food Equipment Group Llc Dba Hobart Service
Cross-Reference Index
Part NumberManufacturer
LT4K499 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
240-2752-040 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
MS21422-04 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MIL-C-15305 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-PRF-15305 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
9204 Vanguard Electronics, Llc (USA)
712030-36 Raytheon Company Div Rmd Strategic (USA)
Related Parts
5970-00-322-6655INTERCHANGEABLE
INSULATOR,BUSHING
9204
2825-00-446-9321INTERCHANGEABLE
BUSHING WITH PIN
9204
4820-00-480-1798INTERCHANGEABLE
VALVE,EXPANSION
21324
9540-00-595-8624INTERCHANGEABLE
ANGLE,STRUCTURAL
5945-00-602-4009INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
C-4088
6145-00-661-0191INTERCHANGEABLE
CABLE,RADIO FREQUENCY
4920-01-016-3060INTERCHANGEABLE
POWER MONITOR
9-204
7035-01-110-5739INTERCHANGEABLE
CARRYING CASE,MODUL
5963-01-134-9890INTERCHANGEABLE
ELECTRONIC MODULE,STANDARDIZED
5196430
3110-01-275-3405INTERCHANGEABLE
BEARING,BALL,ANNULAR
BB-18-43
6510-01-351-3593INTERCHANGEABLE
DRESSING,HYDROCOLLOID
4235-01-391-3110INTERCHANGEABLE
SPILL CLEAN-UP KIT,HAZARDOUS MAT
SK55

Frequently Asked Questions

What is NSN 5950-01-135-6818?

NSN 5950-01-135-6818 is a Coil,radio Frequency, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5950 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5950-01-135-6818?

NSN 5950-01-135-6818 has 7 cross-referenced part numbers: LT4K499 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 240-2752-040 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems), MS21422-04 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MIL-C-15305 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-PRF-15305 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 2 more.

What NSN replaces 5950-01-135-6818?

There are 12 known substitutes for 5950-01-135-6818: 5970-00-322-6655, 2825-00-446-9321, 4820-00-480-1798 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of LT4K499?

Key specifications for LT4K499: DC Resistance Rating in Ohms: 0.070 SINGLE COMPONENT SINGLE WINDING; Rating Method: ELECTRICAL SINGLE COMPONENT SINGLE WINDING; Quality Factor: 60 MINIMUM SINGLE COMPONENT SINGLE WINDING; Maximum Operating Temp: 125.0 CELSIUS DEGC. 20 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5950-01-135-6818 still in active supply?

NSN 5950-01-135-6818 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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