PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS35121-1Connector,receptacle,electrical

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 5935-00-549-2654 · FSC 5935 · No Item Name Available
Verified by PartsTable
NSN 5935-00-549-2654 — this item is cataloged by the U.S. Government under National Stock Number 5935-00-549-2654. Primary manufacturer part number: MS35121-1.
Features
  • Connector,receptacle,electrical — FSC 5935
  • Insert Material: PLASTIC SINGLE MATING END
  • Nominal Thread Size: 0.250 INCHES IN
  • Connector Locking Method: EXTERNALLY THREADED SHELL
  • Shell Material: COPPER
  • Thread Series Designator: UNEF
  • Threaded Device Type: BACK SHELL AND MOUNTING HOLE
  • Included Contact Quantity: 1 SINGLE MATING END SINGLE CONTACT GROUPING
Applications
  • Electrical interconnection
  • Signal interface mating
  • Quick-disconnect coupling
General Description

The Connector,receptacle,electrical, cataloged under National Stock Number 5935-00-549-2654, 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 Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5935-00-549-2654
Primary Part NumberMS35121-1
Item NameConnector,receptacle,electrical
FSC / FSG5935 / 59 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Insert MaterialPLASTIC SINGLE MATING END
Nominal Thread Size0.250 INCHES IN
Connector Locking MethodEXTERNALLY THREADED SHELL
Shell MaterialCOPPER
Thread Series DesignatorUNEF
Threaded Device TypeBACK SHELL AND MOUNTING HOLE
Included Contact Quantity1 SINGLE MATING END SINGLE CONTACT GROUPING
Included Contact TypeROUND PIN SINGLE MATING END SINGLE CONTACT GROUPING
Mating End Quantity1
Thread DirectionRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5999-01-411-976589050-001 INTERCHANGEABLE
Contact,electrical
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (drawings)
5331-01-559-483889050 INTERCHANGEABLE
O-Ring
Romac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division
Cross-Reference Index
Part NumberManufacturer
MS35121-1 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
89050 Airgas Safety, Inc. Dba Airgas (USA)
MS35121 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
UG698U Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
UG698U Joint Electronics Type Designation System (USA)
Related Parts
5999-01-411-9765INTERCHANGEABLE
CONTACT,ELECTRICAL
89050-001
5331-01-559-4838INTERCHANGEABLE
O-RING
89050

Frequently Asked Questions

What is NSN 5935-00-549-2654?

NSN 5935-00-549-2654 is a Connector,receptacle,electrical, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5935 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5935-00-549-2654?

NSN 5935-00-549-2654 has 5 cross-referenced part numbers: MS35121-1 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 89050 (Airgas Safety, Inc. Dba Airgas), MS35121 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), UG698U (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), UG698U (Joint Electronics Type Designation System).

What NSN replaces 5935-00-549-2654?

There are 2 known substitutes for 5935-00-549-2654: 5999-01-411-9765, 5331-01-559-4838. Verify interchangeability with system specifications before substitution.

What are the specifications of MS35121-1?

Key specifications for MS35121-1: Insert Material: PLASTIC SINGLE MATING END; Nominal Thread Size: 0.250 INCHES IN; Connector Locking Method: EXTERNALLY THREADED SHELL; Shell Material: COPPER. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5935-00-549-2654 still in active supply?

NSN 5935-00-549-2654 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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