PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3521-CConnector,plug,electrical

Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division · NSN 5935-00-899-3669 · FSC 5935 · No Item Name Available
Verified by PartsTable
NSN 5935-00-899-3669 — this item is cataloged by the U.S. Government under National Stock Number 5935-00-899-3669. Primary manufacturer part number: 3521-C.
Features
  • Connector,plug,electrical — FSC 5935
  • Contact Maximum Current Rating in Amps: 20.0 SINGLE MATING END SINGLE CONTACT GROUPING
  • Connector Locking Method: CONTACT TWISTLOCK
  • Mating End Quantity: 1
  • Overall Diameter: 2.000 INCHES NOMINAL IN
  • Insert Material: PLASTIC SINGLE MATING END
  • Included Contact Quantity: 4 SINGLE MATING END SINGLE CONTACT GROUPING
  • Contact Removability: NONREMOVABLE SINGLE MATING END SINGLE CONTACT GROUPING
Applications
  • Electrical interconnection
  • Signal interface mating
  • Quick-disconnect coupling
General Description

The Connector,plug,electrical, cataloged under National Stock Number 5935-00-899-3669, 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 Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 4 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
NSN5935-00-899-3669
Primary Part Number3521-C
Item NameConnector,plug,electrical
FSC / FSG5935 / 59 — No Item Name Available
ManufacturerHubbell Incorporated (delaware) Dba Wiring Device-Kellems Division
StatusACTIVE
Contact Maximum Current Rating in Amps20.0 SINGLE MATING END SINGLE CONTACT GROUPING
Connector Locking MethodCONTACT TWISTLOCK
Mating End Quantity1
Overall Diameter2.000 INCHES NOMINAL IN
Insert MaterialPLASTIC SINGLE MATING END
Included Contact Quantity4 SINGLE MATING END SINGLE CONTACT GROUPING
Contact RemovabilityNONREMOVABLE SINGLE MATING END SINGLE CONTACT GROUPING
Contact Maximum AC Voltage Rating in Volts600.0 SINGLE MATING END SINGLE CONTACT GROUPING
Contact Position Arrangement Style4 SINGLE MATING END
Terminal LocationBACK SINGLE MATING END SINGLE CONTACT GROUPING
Terminal TypeSCREW SINGLE MATING END SINGLE CONTACT GROUPING
Shell TypeSOLID
Connector Cable Strain Relief MethodCABLE CLAMP
Polarization MethodCONTACT
Included Contact TypeCURVED PIN W/INSIDE LIP SINGLE MATING END SINGLE CONTACT GROUPING
Body StyleSTRAIGHT SHAPE W/CLAMP
Cable Entrance Diameter0.625 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6510-00-054-72567000030208 INTERCHANGEABLE
Skin Closure,adhesive,surgical
Solventum Us Llc
3110-00-100-5842108-109-6PC487 INTERCHANGEABLE
Bearing,roller,tapered
Struthers Wells Corp
5120-00-104-55596-76070-1 INTERCHANGEABLE
Wrench,orifice
Northrop Grumman Systems Corporation
4820-00-200-0664CFA40614 INTERCHANGEABLE
Valve,globe
Curtis Dyna-Fog, Ltd.
5306-00-218-143635-21 INTERCHANGEABLE
Bolt,shoulder
Dresser Industries Inc Leroi Div
4730-00-867-90283521 INTERCHANGEABLE
Adapter Bushing
Coffin Turbo Pump Inc
5950-00-910-93186140026-12 INTERCHANGEABLE
Transformer,radio Frequency
Viking Technologies, Ltd.
4920-00-918-49593-5-2-1 INTERCHANGEABLE
Lift Pin
Celtech Corporation Div Use CAGE 65552 for All Orders
3020-01-025-82763521 INTERCHANGEABLE
Gear Cam Assembly
Kearflex Engineering Company
3010-01-068-786835-21 INTERCHANGEABLE
Plate Reducer
Cone Drive Operations Inc
Cross-Reference Index
Part NumberManufacturer
010-006174-001 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple (USA)
3521 Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division (USA)
3521-C PRIMARY Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division (USA)
HBL3521C Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division (USA)
910842-9 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
922562-0001-000 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
910842-9 Litton Systems Inc Airtron Div (USA)
Related Parts
6510-00-054-7256INTERCHANGEABLE
SKIN CLOSURE,ADHESIVE,SURGICAL
7000030208
3110-00-100-5842INTERCHANGEABLE
BEARING,ROLLER,TAPERED
108-109-6PC487
5120-00-104-5559INTERCHANGEABLE
WRENCH,ORIFICE
6-76070-1
4820-00-200-0664INTERCHANGEABLE
VALVE,GLOBE
CFA40614
5306-00-218-1436INTERCHANGEABLE
BOLT,SHOULDER
35-21
4730-00-867-9028INTERCHANGEABLE
ADAPTER BUSHING
3521
5950-00-910-9318INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
6140026-12
4920-00-918-4959INTERCHANGEABLE
LIFT PIN
3-5-2-1
3020-01-025-8276INTERCHANGEABLE
GEAR CAM ASSEMBLY
3521
3010-01-068-7868INTERCHANGEABLE
PLATE REDUCER
35-21
5935-01-087-0186INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
3521
5950-01-135-7731INTERCHANGEABLE
TRANSFORMER,POWER

Frequently Asked Questions

What is NSN 5935-00-899-3669?

NSN 5935-00-899-3669 is a Connector,plug,electrical, manufactured by Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division, classified under FSC 5935 (No Item Name Available). Status: active.

What are the part numbers for NSN 5935-00-899-3669?

NSN 5935-00-899-3669 has 7 cross-referenced part numbers: 010-006174-001 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple), 3521 (Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division), 3521-C (Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division), HBL3521C (Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division), 910842-9 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp) and 2 more.

What NSN replaces 5935-00-899-3669?

There are 12 known substitutes for 5935-00-899-3669: 6510-00-054-7256, 3110-00-100-5842, 5120-00-104-5559 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3521-C?

Key specifications for 3521-C: Contact Maximum Current Rating in Amps: 20.0 SINGLE MATING END SINGLE CONTACT GROUPING; Connector Locking Method: CONTACT TWISTLOCK; Mating End Quantity: 1; Overall Diameter: 2.000 INCHES NOMINAL IN. 18 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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