PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-PRF-39012/21Connector,receptacle,electrical

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5935-01-437-0891 · FSC 5935 · No Item Name Available
Verified by PartsTable
NSN 5935-01-437-0891 — this item is cataloged by the U.S. Government under National Stock Number 5935-01-437-0891. Primary manufacturer part number: MIL-PRF-39012/21.
Features
  • Connector,receptacle,electrical — FSC 5935
  • Thread Direction: RIGHT-HAND
  • Shell Material: COPPER ALLOY
  • Specification/standard Data: 81349-MIL-C-39012/21 GOVERNMENT SPECIFICATION
  • Bushing Accommodation Hole Shape: ROUND W/FLAT
  • Thread Class: 2A A
  • Connector Locking Method: BAYONET PIN
  • Nominal Thread Size: 0.375 INCHES IN
Applications
  • Electrical interconnection
  • Signal interface mating
  • Quick-disconnect coupling
General Description

The Connector,receptacle,electrical, cataloged under National Stock Number 5935-01-437-0891, 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 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5935-01-437-0891
Primary Part NumberMIL-PRF-39012/21
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
Thread DirectionRIGHT-HAND
Shell MaterialCOPPER ALLOY
Specification/standard Data81349-MIL-C-39012/21 GOVERNMENT SPECIFICATION
Bushing Accommodation Hole ShapeROUND W/FLAT
Thread Class2A A
Connector Locking MethodBAYONET PIN
Nominal Thread Size0.375 INCHES IN
Threaded Device TypeMOUNTING BUSHING
Contact Position Arrangement StyleBNC SINGLE MATING END
Shell TypeSOLID
Terminal LocationBACK SINGLE MATING END SINGLE CONTACT GROUPING
Radio Frequency Type Contact Characteristic Impedance in Ohms50.0 SINGLE MATING END SINGLE CONTACT GROUPING
Test Data Document81349-MIL-C-39012 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 TypeSOLDER WELL SINGLE MATING END SINGLE CONTACT GROUPING
Included Contact TypeCOAXIAL SOCKET SINGLE MATING END SINGLE CONTACT GROUPING
Mating End Quantity1
Contact RemovabilityNONREMOVABLE SINGLE MATING END SINGLE CONTACT GROUPING
Thread Series DesignatorUNEF
Included Contact Quantity1 SINGLE MATING END SINGLE CONTACT GROUPING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5935-00-721-0003 INTERCHANGEABLE
Connector,receptacle,electrical
5935-00-835-0510 INTERCHANGEABLE
Connector,receptacle,electrical
5935-00-853-7596 INTERCHANGEABLE
Connector,receptacle,electrical
5935-01-343-7125 INTERCHANGEABLE
Connector,receptacle,electrical
Cross-Reference Index
Part NumberManufacturer
MIL-PRF-39012/21 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M39O12/21-OO1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5935-00-721-0003INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5935-00-835-0510INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5935-00-853-7596INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5935-01-343-7125INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL

Frequently Asked Questions

What is NSN 5935-01-437-0891?

NSN 5935-01-437-0891 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 5935-01-437-0891?

NSN 5935-01-437-0891 has 2 cross-referenced part numbers: MIL-PRF-39012/21 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M39O12/21-OO1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5935-01-437-0891?

There are 4 known substitutes for 5935-01-437-0891: 5935-00-721-0003, 5935-00-835-0510, 5935-00-853-7596 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-PRF-39012/21?

Key specifications for MIL-PRF-39012/21: Thread Direction: RIGHT-HAND; Shell Material: COPPER ALLOY; Specification/standard Data: 81349-MIL-C-39012/21 GOVERNMENT SPECIFICATION; Bushing Accommodation Hole Shape: ROUND W/FLAT. 19 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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