PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

UG261CUConnector,plug,electrical

Joint Electronics Type Designation System · NSN 5935-00-577-8762 · FSC 5935 · No Item Name Available
Verified by PartsTable
NSN 5935-00-577-8762 — this item is cataloged by the U.S. Government under National Stock Number 5935-00-577-8762. Primary manufacturer part number: UG261CU.
Features
  • Connector,plug,electrical — FSC 5935
  • Environmental Protection: MOISTURE RESISTANT AND VIBRATION RESISTANT
  • Terminal Location: BACK SINGLE MATING END SINGLE CONTACT GROUPING
  • Contact Removability: NONREMOVABLE SINGLE MATING END SINGLE CONTACT GROUPING
  • Thread Series Designator: UNEF
  • Insert Material: PLASTIC POLYTETRAFLUOROETHYLENE SINGLE MATING END
  • Contact Maximum AC Voltage Rating in Volts: 500.0 SINGLE MATING END SINGLE CONTACT GROUPING
  • Contact Position Arrangement Style: N SINGLE MATING END
Applications
  • Electrical interconnection
  • Signal interface mating
  • Quick-disconnect coupling
General Description

The Connector,plug,electrical, cataloged under National Stock Number 5935-00-577-8762, 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 Joint Electronics Type Designation System. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5935-00-577-8762
Primary Part NumberUG261CU
Item NameConnector,plug,electrical
FSC / FSG5935 / 59 — No Item Name Available
ManufacturerJoint Electronics Type Designation System
StatusACTIVE
Environmental ProtectionMOISTURE RESISTANT AND VIBRATION RESISTANT
Terminal LocationBACK SINGLE MATING END SINGLE CONTACT GROUPING
Contact RemovabilityNONREMOVABLE SINGLE MATING END SINGLE CONTACT GROUPING
Thread Series DesignatorUNEF
Insert MaterialPLASTIC POLYTETRAFLUOROETHYLENE SINGLE MATING END
Contact Maximum AC Voltage Rating in Volts500.0 SINGLE MATING END SINGLE CONTACT GROUPING
Contact Position Arrangement StyleN SINGLE MATING END
Radio Frequency Type Contact Characteristic Impedance in Ohms50.0 SINGLE MATING END SINGLE CONTACT GROUPING
Connector Locking MethodINTERNALLY THREADED COUPLING NUT
Test Data Document81349-MIL-C-3608 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-MIL-C-3608 GOVERNMENT SPECIFICATION
Nominal Thread Size0.438 INCHES IN
Included Contact Quantity1 SINGLE MATING END SINGLE CONTACT GROUPING
Contact Maximum Frequency Rating10.0 MEGAHERTZ SINGLE MATING END SINGLE CONTACT GROUPING
Included Contact TypeCOAXIAL PIN SINGLE MATING END SINGLE CONTACT GROUPING
Mating End Quantity1
Thread Class2A A
Overall Diameter0.562 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5935-00-149-2726 INTERCHANGEABLE
Connector,receptacle,electrical
5935-00-149-3894 INTERCHANGEABLE
Connector,plug,electrical
5935-00-164-7966 INTERCHANGEABLE
Connector,plug,electrical
5935-00-258-1767CW123AU INTERCHANGEABLE
Cover,electrical Connector
Joint Electronics Type Designation System
5935-00-259-9848 INTERCHANGEABLE
Connector,receptacle,electrical
5935-00-259-9849568111 INTERCHANGEABLE
Connector,receptacle,electrical
Stewart-Warner Corporation
5935-00-299-7815 INTERCHANGEABLE
Connector,receptacle,electrical
5935-00-466-1347 INTERCHANGEABLE
Connector,plug,electrical
5935-00-577-2281 INTERCHANGEABLE
Connector,plug,electrical
5935-00-682-0501 INTERCHANGEABLE
Connector,plug,electrical
Cross-Reference Index
Part NumberManufacturer
UG261CU Joint Electronics Type Designation System (USA)
MILC3608 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS35171-261C Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5935-00-149-2726INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5935-00-149-3894INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
5935-00-164-7966INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
5935-00-258-1767INTERCHANGEABLE
COVER,ELECTRICAL CONNECTOR
CW123AU
5935-00-259-9848INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5935-00-259-9849INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
568111
5935-00-299-7815INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5935-00-466-1347INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
5935-00-577-2281INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
5935-00-682-0501INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
5935-00-686-0361INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5935-00-804-2835INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL

Frequently Asked Questions

What is NSN 5935-00-577-8762?

NSN 5935-00-577-8762 is a Connector,plug,electrical, manufactured by Joint Electronics Type Designation System, classified under FSC 5935 (No Item Name Available). Status: active.

What are the part numbers for NSN 5935-00-577-8762?

NSN 5935-00-577-8762 has 3 cross-referenced part numbers: UG261CU (Joint Electronics Type Designation System), MILC3608 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MS35171-261C (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5935-00-577-8762?

There are 12 known substitutes for 5935-00-577-8762: 5935-00-149-2726, 5935-00-149-3894, 5935-00-164-7966 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of UG261CU?

Key specifications for UG261CU: Environmental Protection: MOISTURE RESISTANT AND VIBRATION RESISTANT; Terminal Location: BACK SINGLE MATING END SINGLE CONTACT GROUPING; Contact Removability: NONREMOVABLE SINGLE MATING END SINGLE CONTACT GROUPING; Thread Series Designator: UNEF. 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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