PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20491Connector,plug,electrical

Kleinschmidt Inc · NSN 5935-00-221-9212 · FSC 5935 · No Item Name Available
Verified by PartsTable
NSN 5935-00-221-9212 — this item is cataloged by the U.S. Government under National Stock Number 5935-00-221-9212. Primary manufacturer part number: 20491.
Features
  • Connector,plug,electrical — FSC 5935
  • Threaded Device Type: COUPLING FACILITY AND BACK SHELL
  • Thread Class: 2A A
  • Overall Diameter: 1.250 INCHES NOMINAL IN
  • Environmental Protection: MOISTURE RESISTANT AND SALT WATER RESISTANT AND VIBRATION RESISTANT
  • Included Contact Type: ROUND PIN SINGLE MATING END SINGLE CONTACT GROUPING
  • Shell Surface Treatment: CADMIUM
  • Contact Position Arrangement Style: 16S-1 SINGLE MATING END
Applications
  • Electrical interconnection
  • Signal interface mating
  • Quick-disconnect coupling
General Description

The Connector,plug,electrical, cataloged under National Stock Number 5935-00-221-9212, 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 Kleinschmidt Inc. Government technical data includes 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5935-00-221-9212
Primary Part Number20491
Item NameConnector,plug,electrical
FSC / FSG5935 / 59 — No Item Name Available
ManufacturerKleinschmidt Inc
StatusCANCELLED
Threaded Device TypeCOUPLING FACILITY AND BACK SHELL
Thread Class2A A
Overall Diameter1.250 INCHES NOMINAL IN
Environmental ProtectionMOISTURE RESISTANT AND SALT WATER RESISTANT AND VIBRATION RESISTANT
Included Contact TypeROUND PIN SINGLE MATING END SINGLE CONTACT GROUPING
Shell Surface TreatmentCADMIUM
Contact Position Arrangement Style16S-1 SINGLE MATING END
Contact Maximum AC Voltage Rating in Volts500.0 SINGLE MATING END SINGLE CONTACT GROUPING
Terminal LocationBACK SINGLE MATING END SINGLE CONTACT GROUPING
Precious MaterialGOLD AND SILVER
Polarization MethodKEYWAY OR MULTIPLE KEYWAY
Contact RemovabilityNONREMOVABLE SINGLE MATING END SINGLE CONTACT GROUPING
Shell MaterialALUMINUM ALLOY
Thread Series DesignatorUNEF
Included Contact Quantity7 SINGLE MATING END SINGLE CONTACT GROUPING
Nominal Thread Length0.375 INCHES IN
Precious Material and LocationCONTACT SURFACES GOLD AND CONTACT SURFACES SILVER
Shell TypeSOLID
Contact Surface TreatmentGOLD AND SILVER SINGLE MATING END SINGLE CONTACT GROUPING
Nominal Thread Size1.000 INCHES AND 0.875 INCHES IN
Connector Locking MethodEXTERNALLY THREADED SHELL
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 SINGLE CONTACT GROUPING
Precious Material and Weight0.007 GOLD GRAINS, TROY AND 0.007 SILVER GRAINS, TROY
Insert Position in Deg0.0
Terminal TypeSOLDER WELL SINGLE MATING END SINGLE CONTACT GROUPING
Specification/standard Data81349-MIL-C-5015 GOVERNMENT SPECIFICATION
Contact Maximum Current Rating in Amps22.0 SINGLE MATING END SINGLE CONTACT GROUPING
Body StyleSTRAIGHT SHAPE, EXTERNAL COUPLING W/BACKSHELL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
3895-00-718-372358239 INTERCHANGEABLE
Sprinkler Mat Assembly
Dressta North America Ltd
5365-00-996-067920491 INTERCHANGEABLE
Spacer,ring
Northrop Grumman Systems Corporation Dba Aerospace Systems Div Aeronautics Systems
5342-01-115-1747 INTERCHANGEABLE
Coupling
5935-01-224-1179MS3451W16S-1P INTERCHANGEABLE
Connector,receptacle,electrical
Sae International Dba Sae International
5950-01-416-57717137806-0001 INTERCHANGEABLE
Reactor
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
5306-01-498-385891264A585 INTERCHANGEABLE
Bolt,internal Wrenching
Mcmaster-Carr Supply Co
1005-01-601-558620491 INTERCHANGEABLE
Guard,trigger
Charles Reed Knight Jr Dba Knight's Armament Company
Cross-Reference Index
Part NumberManufacturer
20491 Kleinschmidt Inc (USA)
MIL-C-5015 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS3101A16S1P Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
AN3101A16S1P Aeronautical Standards Group Dept of Navy and Air Force (USA)
Related Parts
3895-00-718-3723INTERCHANGEABLE
SPRINKLER MAT ASSEMBLY
58239
5365-00-996-0679INTERCHANGEABLE
SPACER,RING
20491
5342-01-115-1747INTERCHANGEABLE
COUPLING
5935-01-224-1179INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
MS3451W16S-1P
5950-01-416-5771INTERCHANGEABLE
REACTOR
7137806-0001
5306-01-498-3858INTERCHANGEABLE
BOLT,INTERNAL WRENCHING
91264A585
1005-01-601-5586INTERCHANGEABLE
GUARD,TRIGGER
20491

Frequently Asked Questions

What is NSN 5935-00-221-9212?

NSN 5935-00-221-9212 is a Connector,plug,electrical, manufactured by Kleinschmidt Inc, classified under FSC 5935 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5935-00-221-9212?

NSN 5935-00-221-9212 has 4 cross-referenced part numbers: 20491 (Kleinschmidt Inc), MIL-C-5015 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MS3101A16S1P (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), AN3101A16S1P (Aeronautical Standards Group Dept of Navy and Air Force).

What NSN replaces 5935-00-221-9212?

There are 7 known substitutes for 5935-00-221-9212: 3895-00-718-3723, 5365-00-996-0679, 5342-01-115-1747 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20491?

Key specifications for 20491: Threaded Device Type: COUPLING FACILITY AND BACK SHELL; Thread Class: 2A A; Overall Diameter: 1.250 INCHES NOMINAL IN; Environmental Protection: MOISTURE RESISTANT AND SALT WATER RESISTANT AND VIBRATION RESISTANT. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5935-00-221-9212 still in active supply?

NSN 5935-00-221-9212 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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