PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS3451W20-18PConnector,receptacle,electrical

Sae International Dba Sae International · NSN 5935-01-225-5984 · FSC 5935 · No Item Name Available
Verified by PartsTable
NSN 5935-01-225-5984 — this item is cataloged by the U.S. Government under National Stock Number 5935-01-225-5984. Primary manufacturer part number: MS3451W20-18P.
Features
  • Connector,receptacle,electrical — FSC 5935
  • Body Style: STRAIGHT SHAPE, EXTERNAL COUPLING
  • Test Data Document: 81349-MIL-C-5015 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.).
  • Contact Maximum DC Voltage Rating in Volts: 700.0 SINGLE MATING END ALL CONTACT GROUPINGS
  • Insert Position in Deg: 0.0
  • Included Contact Type: ROUND PIN SINGLE MATING END ALL CONTACT GROUPINGS
  • Contact Material: COPPER ALLOY SINGLE MATING END ALL CONTACT GROUPINGS
  • Terminal Location: BACK SINGLE MATING END ALL CONTACT GROUPINGS
Applications
  • Electrical interconnection
  • Signal interface mating
  • Quick-disconnect coupling
General Description

The Connector,receptacle,electrical, cataloged under National Stock Number 5935-01-225-5984, 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 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5935-01-225-5984
Primary Part NumberMS3451W20-18P
Item NameConnector,receptacle,electrical
FSC / FSG5935 / 59 — No Item Name Available
ManufacturerSae International Dba Sae International
StatusACTIVE
Body StyleSTRAIGHT SHAPE, EXTERNAL COUPLING
Test Data Document81349-MIL-C-5015 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.).
Contact Maximum DC Voltage Rating in Volts700.0 SINGLE MATING END ALL CONTACT GROUPINGS
Insert Position in Deg0.0
Included Contact TypeROUND PIN SINGLE MATING END ALL CONTACT GROUPINGS
Contact MaterialCOPPER ALLOY SINGLE MATING END ALL CONTACT GROUPINGS
Terminal LocationBACK SINGLE MATING END ALL CONTACT GROUPINGS
Precious MaterialGOLD
Specification/standard Data96906-MS3451 GOVERNMENT STANDARD
Contact Surface Treatment Document and ClassificationMIL-G-45204,TYPE 2,GRADE C,CLASS 1 MIL SPEC 1ST TREATMENT RESPONSE AND QQ-N-290,CLASS 2 FED SPEC 2ND TREATMENT RESPONSE SINGLE MATING END ALL CONTACT GROUPINGS
Shell MaterialALUMINUM ALLOY
Shell Surface Treatment Document and ClassificationQQ-P-416,TYPE 2,CLASS 3 FED SPEC ALL TREATMENT RESPONSES
Overall Diameter1.443 INCHES MINIMUM AND 1.505 INCHES MAXIMUM IN
Precious Material and LocationCONTACT SURFACES GOLD
Contact Maximum Current Rating in Amps22.0 SINGLE MATING END SECOND CONTACT GROUPING
Contact Surface TreatmentGOLD AND NICKEL SINGLE MATING END ALL CONTACT GROUPINGS
Polarization MethodKEY, MULTIPLE KEY GROOVE
Connector Locking MethodEXTERNALLY THREADED SHELL
Operating Temp Rating-55.0 CELSIUS MINIMUM AND 200.0 CELSIUS MAXIMUM DEGC
Thread Series DesignatorUNEF
Included Contact Quantity3 SINGLE MATING END FIRST CONTACT GROUPING
Contact RemovabilityREMOVABLE SINGLE MATING END ALL CONTACT GROUPINGS
Shell TypeSOLID
Included Contact Quantity6 SINGLE MATING END SECOND CONTACT GROUPING
Terminal TypeCRIMP SINGLE MATING END ALL CONTACT GROUPINGS
Contact Position Arrangement Style20-18 SINGLE MATING END
Nominal Thread Size1.187 INCHES AND 1.250 INCHES IN
Contact Maximum Current Rating in Amps41.0 SINGLE MATING END FIRST CONTACT GROUPING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5935-00-067-6705 INTERCHANGEABLE
Cover,electrical Connector
5935-01-224-1179MS3451W16S-1P INTERCHANGEABLE
Connector,receptacle,electrical
Sae International Dba Sae International
5935-01-367-8751 INTERCHANGEABLE
Cover,electrical Connector
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
5935-01-649-1300MS3451LS20-4S 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
Cross-Reference Index
Part NumberManufacturer
MS3101R20-18P Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS3451W20-18P PRIMARY Sae International Dba Sae International (USA)
SAE-AS34511 Society of Automotive Engineers Inc (USA)
SAE-AS50151 Sae International Dba Sae International (USA)
MS27295 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS3451W20-18P Society of Automotive Engineers Inc (USA)
MS3451W20-18P Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MIL-C-5015 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
SAE-AS34511 Sae International Dba Sae International (USA)
SAE-AS50151 Society of Automotive Engineers Inc (USA)
Related Parts
5935-00-067-6705INTERCHANGEABLE
COVER,ELECTRICAL CONNECTOR
5935-01-224-1179INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
MS3451W16S-1P
5935-01-367-8751INTERCHANGEABLE
COVER,ELECTRICAL CONNECTOR
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
5935-01-649-1300INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
MS3451LS20-4S
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 5935-01-225-5984?

NSN 5935-01-225-5984 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 5935-01-225-5984?

NSN 5935-01-225-5984 has 10 cross-referenced part numbers: MS3101R20-18P (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS3451W20-18P (Sae International Dba Sae International), SAE-AS34511 (Society of Automotive Engineers Inc), SAE-AS50151 (Sae International Dba Sae International), MS27295 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M) and 5 more.

What NSN replaces 5935-01-225-5984?

There are 11 known substitutes for 5935-01-225-5984: 5935-00-067-6705, 5935-01-224-1179, 5935-01-367-8751 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS3451W20-18P?

Key specifications for MS3451W20-18P: Body Style: STRAIGHT SHAPE, EXTERNAL COUPLING; Test Data Document: 81349-MIL-C-5015 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.).; Contact Maximum DC Voltage Rating in Volts: 700.0 SINGLE MATING END ALL CONTACT GROUPINGS; Special Features: IN ORDER TO COMPLETE THE CONNECTOR ASSEMBLY,THE USER MUST OBTAIN/PROVIDE THE BACKSHELL. STANDARD VERSIONS MAY BE ORDERED AS NSN 5935-01-225-5984,P/N M85049/52-1-20W FOR THE STRAIGHT STYLE,OR NSN 5935-01-183-6491,P/N M85049/51-1-20W FOR THE RIGHT ANGLE STYLE W. 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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