PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS3451LS20-4SConnector,receptacle,electrical

Sae International Dba Sae International · NSN 5935-01-649-1300 · FSC 5935 · No Item Name Available
Verified by PartsTable
NSN 5935-01-649-1300 — this item is cataloged by the U.S. Government under National Stock Number 5935-01-649-1300. Primary manufacturer part number: MS3451LS20-4S.
Features
  • Connector,receptacle,electrical — FSC 5935
  • Included Contact Type: ROUND SOCKET SINGLE MATING END SINGLE CONTACT GROUPING
  • Insert Position in Deg: 0.0
  • Thread Series Designator: UNEF
  • Contact Removability: REMOVABLE SINGLE MATING END SINGLE CONTACT GROUPING
  • Connector Locking Method: EXTERNALLY THREADED SHELL
  • Precious Material and Location: CONTACT SURFACE SILVER
  • Overall Diameter: 1.474 INCHES NOMINAL IN
Applications
  • Electrical interconnection
  • Signal interface mating
  • Quick-disconnect coupling
General Description

The Connector,receptacle,electrical, cataloged under National Stock Number 5935-01-649-1300, 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 Sae International Dba Sae International. Government technical data includes 23 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5935-01-649-1300
Primary Part NumberMS3451LS20-4S
Item NameConnector,receptacle,electrical
FSC / FSG5935 / 59 — No Item Name Available
ManufacturerSae International Dba Sae International
StatusACTIVE
Included Contact TypeROUND SOCKET SINGLE MATING END SINGLE CONTACT GROUPING
Insert Position in Deg0.0
Thread Series DesignatorUNEF
Contact RemovabilityREMOVABLE SINGLE MATING END SINGLE CONTACT GROUPING
Connector Locking MethodEXTERNALLY THREADED SHELL
Precious Material and LocationCONTACT SURFACE SILVER
Overall Diameter1.474 INCHES NOMINAL IN
Nominal Thread Size1.188 INCHES AND 1.250 INCHES IN
Thread DirectionRIGHT-HAND
Body StyleSTRAIGHT SHAPE, EXTERNAL COUPLING
Thread Class2A A
Shell TypeSOLID
Threaded Device TypeBACK SHELL AND COUPLING FACILITY
Mating End Quantity1
Polarization MethodKEY OR MULTIPLE KEY
Included Contact Quantity4 SINGLE MATING END SINGLE CONTACT GROUPING
Thread Quantity Per Inch18
Terminal LocationBACK SINGLE MATING END SINGLE CONTACT GROUPING
Shell Surface TreatmentPASSIVATE
Terminal TypeCRIMP SINGLE MATING END SINGLE CONTACT GROUPING
Precious MaterialSILVER
Contact Position Arrangement Style20-4 SINGLE MATING END
Shell MaterialSTEEL CORROSION RESISTING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5935-01-224-1179MS3451W16S-1P INTERCHANGEABLE
Connector,receptacle,electrical
Sae International Dba Sae International
5935-01-225-5984MS3451W20-18P INTERCHANGEABLE
Connector,receptacle,electrical
Sae International Dba Sae International
5935-01-629-7601MS3451L16-10P INTERCHANGEABLE
Connector,receptacle,electrical
Sae International Dba Sae International
5935-01-629-9303MS3451L28-9S INTERCHANGEABLE
Connector,receptacle,electrical
Sae International Dba Sae International
5935-01-630-2706MS3451L28-12S INTERCHANGEABLE
Connector,receptacle,electrical
Sae International Dba Sae International
5935-01-644-1518MS3451L20-7SX INTERCHANGEABLE
Connector,receptacle,electrical
Sae International Dba Sae International
5935-01-699-8796MS3451LS22-23P INTERCHANGEABLE
Connector,receptacle,electrical
Sae International Dba Sae International
5935-01-699-9132MS3451LS16S-1P INTERCHANGEABLE
Connector,receptacle,electrical
Sae International Dba Sae International
5935-01-700-0101MS3451LS14S-2P INTERCHANGEABLE
Connector,receptacle,electrical
Sae International Dba Sae International
Cross-Reference Index
Part NumberManufacturer
CJ1051LS204S Corsair Electrical Connectors Inc Dba Corsair Electrical Connectors Inc (USA)
SAE-AS50151 Sae International Dba Sae International (USA)
MS3451LS20-4S PRIMARY Sae International Dba Sae International (USA)
SAE-AS50151 Society of Automotive Engineers Inc (USA)
SAE-AS34511 Sae International Dba Sae International (USA)
MS3451LS20-4S Society of Automotive Engineers Inc (USA)
MS3451LS20-4S Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
SAE-AS34511 Society of Automotive Engineers Inc (USA)
Related Parts
5935-01-224-1179INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
MS3451W16S-1P
5935-01-225-5984INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
MS3451W20-18P
5935-01-629-7601INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
MS3451L16-10P
5935-01-629-9303INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
MS3451L28-9S
5935-01-630-2706INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
MS3451L28-12S
5935-01-644-1518INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
MS3451L20-7SX
5935-01-699-8796INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
MS3451LS22-23P
5935-01-699-9132INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
MS3451LS16S-1P
5935-01-700-0101INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
MS3451LS14S-2P

Frequently Asked Questions

What is NSN 5935-01-649-1300?

NSN 5935-01-649-1300 is a Connector,receptacle,electrical, manufactured by Sae International Dba Sae International, classified under FSC 5935 (No Item Name Available). Status: active.

What are the part numbers for NSN 5935-01-649-1300?

NSN 5935-01-649-1300 has 8 cross-referenced part numbers: CJ1051LS204S (Corsair Electrical Connectors Inc Dba Corsair Electrical Connectors Inc), SAE-AS50151 (Sae International Dba Sae International), MS3451LS20-4S (Sae International Dba Sae International), SAE-AS50151 (Society of Automotive Engineers Inc), SAE-AS34511 (Sae International Dba Sae International) and 3 more.

What NSN replaces 5935-01-649-1300?

There are 9 known substitutes for 5935-01-649-1300: 5935-01-224-1179, 5935-01-225-5984, 5935-01-629-7601 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS3451LS20-4S?

Key specifications for MS3451LS20-4S: Included Contact Type: ROUND SOCKET SINGLE MATING END SINGLE CONTACT GROUPING; Insert Position in Deg: 0.0; Thread Series Designator: UNEF; Contact Removability: REMOVABLE SINGLE MATING END SINGLE CONTACT GROUPING. 25 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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