PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-C-38999Connector,receptacle,electrical

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5935-01-143-5337 · FSC 5935 · No Item Name Available
Verified by PartsTable
NSN 5935-01-143-5337 — this item is cataloged by the U.S. Government under National Stock Number 5935-01-143-5337. Primary manufacturer part number: MIL-C-38999.
Features
  • Connector,receptacle,electrical — FSC 5935
  • Mating End Quantity: 1
  • Center to Center Distance Between Mounting Facilities Parallel to Height: 1.500 INCHES NOMINAL IN
  • Precious Material and Weight: 0.128 GOLD GRAINS, TROY
  • Features Provided: SCOOPPROOF DESIGN
  • Contact Surface Treatment: GOLD SINGLE MATING END SINGLE CONTACT GROUPING
  • Contact Position Arrangement Style: 25-35 SINGLE MATING END
  • Shell Surface Treatment: CADMIUM
Applications
  • Electrical interconnection
  • Signal interface mating
  • Quick-disconnect coupling
General Description

The Connector,receptacle,electrical, cataloged under National Stock Number 5935-01-143-5337, is classified within Federal Supply Class 5935 (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 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, 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
NSN5935-01-143-5337
Primary Part NumberMIL-C-38999
Item NameConnector,receptacle,electrical
FSC / FSG5935 / 59 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Mating End Quantity1
Center to Center Distance Between Mounting Facilities Parallel to Height1.500 INCHES NOMINAL IN
Precious Material and Weight0.128 GOLD GRAINS, TROY
Features ProvidedSCOOPPROOF DESIGN
Contact Surface TreatmentGOLD SINGLE MATING END SINGLE CONTACT GROUPING
Contact Position Arrangement Style25-35 SINGLE MATING END
Shell Surface TreatmentCADMIUM
Precious MaterialGOLD
Shell Surface Treatment Document and ClassificationQQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE
Contact Surface Treatment Document and ClassificationMIL-G-45204 MIL SPEC SINGLE TREATMENT RESPONSE SINGLE MATING END SINGLE CONTACT GROUPING
Precious Material and LocationCONTACT SURFACES GOLD
Test Data Document81349-MIL-C-38999 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.).
Terminal LocationBACK SINGLE MATING END SINGLE CONTACT GROUPING
Insert MaterialPLASTIC EPOXY SINGLE MATING END
Shell MaterialALUMINUM ALLOY
Contact RemovabilityREMOVABLE SINGLE MATING END SINGLE CONTACT GROUPING
Operating Temp Rating-65.0 CELSIUS MINIMUM AND 175.0 CELSIUS MAXIMUM DEGC
Included Contact TypeROUND PIN SINGLE MATING END SINGLE CONTACT GROUPING
Contact MaterialCOPPER ALLOY SINGLE MATING END SINGLE CONTACT GROUPING
Unthreaded Mounting Hole Diameter0.142 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN
Shell TypeSOLID
Polarization MethodKEYWAY OR MULTIPLE KEYWAY
Included Contact Quantity128 SINGLE MATING END SINGLE CONTACT GROUPING
Distance Between Centerlines of Mounting Facilities Parallel to Body Width1.500 INCHES NOMINAL IN
Body StyleSTRAIGHT SHAPE, EXTERNAL COUPLING
Environmental ProtectionMOISTURE PROOF AND SALT WATER RESISTANT AND VIBRATION PROOF AND CORROSION RESISTANT AND DUST RESISTANT AND FUEL RESISTANT AND FUNGUS RESISTANT AND HUMIDITY RESISTANT AND OIL RESISTANT AND SHOCK RESISTANT AND THERMAL SHOCK RESISTANT AND VIBRATION RESISTANT
Terminal TypeCRIMP SINGLE MATING END SINGLE CONTACT GROUPING
Insert Position in Deg0.0 AND 95.0 AND 132.0 AND 232.0 AND 260.0
Specification/standard Data96906-MS27656 GOVERNMENT STANDARD
Distance From Mounting Shoulder to Front Face0.785 INCHES MINIMUM AND 0.790 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5935-01-028-6597 INTERCHANGEABLE
Connector,receptacle,electrical
Cross-Reference Index
Part NumberManufacturer
MIL-C-38999 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS27656E25B35P Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5935-01-028-6597INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL

Frequently Asked Questions

What is NSN 5935-01-143-5337?

NSN 5935-01-143-5337 is a Connector,receptacle,electrical, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5935 (No Item Name Available). Status: active.

What are the part numbers for NSN 5935-01-143-5337?

NSN 5935-01-143-5337 has 2 cross-referenced part numbers: MIL-C-38999 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MS27656E25B35P (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5935-01-143-5337?

There is 1 known substitute for 5935-01-143-5337: 5935-01-028-6597. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-C-38999?

Key specifications for MIL-C-38999: Mating End Quantity: 1; Center to Center Distance Between Mounting Facilities Parallel to Height: 1.500 INCHES NOMINAL IN; Precious Material and Weight: 0.128 GOLD GRAINS, TROY; Features Provided: SCOOPPROOF DESIGN. 30 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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