PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

999Connector,receptacle,electrical

Cooper Wiring Devices Inc. · NSN 5935-00-621-8601 · FSC 5935 · No Item Name Available
Verified by PartsTable
NSN 5935-00-621-8601 — this item is cataloged by the U.S. Government under National Stock Number 5935-00-621-8601. Primary manufacturer part number: 999.
Features
  • Connector,receptacle,electrical — FSC 5935
  • Included Contact Quantity: 1 SINGLE MATING END FIRST CONTACT GROUPING
  • Shell Type: SOLID
  • Contact Removability: NONREMOVABLE SINGLE MATING END ALL CONTACT GROUPINGS
  • Included Contact Quantity: 2 SINGLE MATING END SECOND CONTACT GROUPING
  • Contact Maximum DC Voltage Rating in Volts: 125.0 SINGLE MATING END ALL CONTACT GROUPINGS
  • Contact Maximum AC Voltage Rating in Volts: 125.0 SINGLE MATING END ALL CONTACT GROUPINGS
  • Polarization Method: MATING END
Applications
  • Electrical interconnection
  • Signal interface mating
  • Quick-disconnect coupling
General Description

The Connector,receptacle,electrical, cataloged under National Stock Number 5935-00-621-8601, 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 Cooper Wiring Devices Inc.. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN5935-00-621-8601
Primary Part Number999
Item NameConnector,receptacle,electrical
FSC / FSG5935 / 59 — No Item Name Available
ManufacturerCooper Wiring Devices Inc.
StatusACTIVE
Included Contact Quantity1 SINGLE MATING END FIRST CONTACT GROUPING
Shell TypeSOLID
Contact RemovabilityNONREMOVABLE SINGLE MATING END ALL CONTACT GROUPINGS
Included Contact Quantity2 SINGLE MATING END SECOND CONTACT GROUPING
Contact Maximum DC Voltage Rating in Volts125.0 SINGLE MATING END ALL CONTACT GROUPINGS
Contact Maximum AC Voltage Rating in Volts125.0 SINGLE MATING END ALL CONTACT GROUPINGS
Polarization MethodMATING END
Body StyleWALL, MOUNT, SINGLE GANG
Contact Maximum Current Rating in Amps15.0 SINGLE MATING END ALL CONTACT GROUPINGS
Mating End Quantity1
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5120-00-056-39405120-00-056-3940 INTERCHANGEABLE
Blade,nutdriver
General Services Administration Federal Supply Service
3110-00-114-9631 INTERCHANGEABLE
Bearing,ball,annular
5977-00-280-6773999 INTERCHANGEABLE
Brush,electrical Contact
Abb Motors & Mechanical Inc Div Abb Motors and Mechanical Inc.
5120-00-288-767913D8453 INTERCHANGEABLE
Extractor,lamp
Westinghouse Electric Corp
2805-00-386-338466069A INTERCHANGEABLE
Valve,poppet,engine
Brinkley Technology Group Llc Dba Hercules Manufacturing
5340-00-473-5957 INTERCHANGEABLE
Key Blank
6625-00-504-14868495619 INTERCHANGEABLE
Adapter,test
Us Army Aviation and Missile Command
5340-00-598-7819999.1-2X2-1-2 INTERCHANGEABLE
Brace,corner
Stanley Black & Decker, Inc.
3655-00-661-228682-159 INTERCHANGEABLE
Valve,oxygen Pressure
Marshall Excelsior Co
5940-00-686-8168 INTERCHANGEABLE
Terminal,lug
Cross-Reference Index
Part NumberManufacturer
999 PRIMARY Cooper Wiring Devices Inc. (USA)
Related Parts
5120-00-056-3940INTERCHANGEABLE
BLADE,NUTDRIVER
5120-00-056-3940
3110-00-114-9631INTERCHANGEABLE
BEARING,BALL,ANNULAR
5977-00-280-6773INTERCHANGEABLE
BRUSH,ELECTRICAL CONTACT
999
5120-00-288-7679INTERCHANGEABLE
EXTRACTOR,LAMP
13D8453
2805-00-386-3384INTERCHANGEABLE
VALVE,POPPET,ENGINE
66069A
5340-00-473-5957INTERCHANGEABLE
KEY BLANK
6625-00-504-1486INTERCHANGEABLE
ADAPTER,TEST
8495619
5340-00-598-7819INTERCHANGEABLE
BRACE,CORNER
999.1-2X2-1-2
3655-00-661-2286INTERCHANGEABLE
VALVE,OXYGEN PRESSURE
82-159
5940-00-686-8168INTERCHANGEABLE
TERMINAL,LUG
5330-00-965-6861INTERCHANGEABLE
PACKING,PREFORMED
6625-01-005-7081INTERCHANGEABLE
TESTER,INTEGRATED CIRCUIT
999

Frequently Asked Questions

What is NSN 5935-00-621-8601?

NSN 5935-00-621-8601 is a Connector,receptacle,electrical, manufactured by Cooper Wiring Devices Inc., classified under FSC 5935 (No Item Name Available). Status: active.

What are the part numbers for NSN 5935-00-621-8601?

NSN 5935-00-621-8601 has 1 cross-referenced part number: 999 (Cooper Wiring Devices Inc.).

What NSN replaces 5935-00-621-8601?

There are 12 known substitutes for 5935-00-621-8601: 5120-00-056-3940, 3110-00-114-9631, 5977-00-280-6773 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 999?

Key specifications for 999: Included Contact Quantity: 1 SINGLE MATING END FIRST CONTACT GROUPING; Shell Type: SOLID; Contact Removability: NONREMOVABLE SINGLE MATING END ALL CONTACT GROUPINGS; Included Contact Quantity: 2 SINGLE MATING END SECOND CONTACT GROUPING. 10 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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