PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

23-521Contact,electrical

Eaton Corp Opns & Technical Center · NSN 5999-00-035-7893 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-035-7893 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-035-7893. Primary manufacturer part number: 23-521.
Features
  • Contact,electrical — FSC 5999
  • Terminal Type and Quantity: 1 CRIMP AXIALLY AT ONE END
  • Material: COPPER CONTACT
  • Precious Material and Weight: 0.005 SILVER GRAINS, TROY
  • Precious Material: SILVER
  • Pin Diameter: 0.034 INCHES NOMINAL IN
  • Surface Treatment: SILVER BODY
  • Style Designator: PIN CONTACT
Applications
  • Applications requiring Copper Contact construction
General Description

The Contact,electrical, cataloged under National Stock Number 5999-00-035-7893, is classified within Federal Supply Class 5999 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Eaton Corp Opns & Technical Center. Government technical data includes 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-035-7893
Primary Part Number23-521
Item NameContact,electrical
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerEaton Corp Opns & Technical Center
StatusACTIVE
Terminal Type and Quantity1 CRIMP AXIALLY AT ONE END
MaterialCOPPER CONTACT
Precious Material and Weight0.005 SILVER GRAINS, TROY
Precious MaterialSILVER
Pin Diameter0.034 INCHES NOMINAL IN
Surface TreatmentSILVER BODY
Style DesignatorPIN CONTACT
Overall Diameter0.890 INCHES NOMINAL IN
Precious Material and LocationEXTERNAL SURFACE SILVER
MaterialCOPPER BODY
Cable Entrance Diameter0.025 INCHES NOMINAL IN
Surface TreatmentSILVER CONTACT
Mounting MethodFORCE FIT
Terminal Type and Quantity1 CRIMP AXIALLY AT ONE END
MaterialCOPPER CONTACT
Precious Material and Weight0.005 SILVER GRAINS, TROY
Precious MaterialSILVER
Pin Diameter0.034 INCHES NOMINAL IN
Surface TreatmentSILVER BODY
Style DesignatorPIN CONTACT
Overall Diameter0.890 INCHES NOMINAL IN
Precious Material and LocationEXTERNAL SURFACE SILVER
MaterialCOPPER BODY
Cable Entrance Diameter0.025 INCHES NOMINAL IN
Surface TreatmentSILVER CONTACT
Mounting MethodFORCE FIT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeJ
Verified Substitutes 12
Circuit Card Assembly
2810-00-118-902523521 INTERCHANGEABLE
Piston,internal Combustion Engin
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
5950-00-648-540323521 INTERCHANGEABLE
Transformer,power
L3harris Technologies, Inc Div Space & Airborne Systems
5985-00-723-4628MX-1554A/U INTERCHANGEABLE
Seal,radio Frequency Transmissio
Joint Electronics Type Designation System
5940-00-784-304910-910-2 INTERCHANGEABLE
Terminal,stud
Concord Electronics, Inc.
3010-00-824-268423521 INTERCHANGEABLE
Coupling,shaft,flexible
Senior Operations Llc Dba Metal Bellows Div Metal Bellows
5340-00-854-018823521 INTERCHANGEABLE
Standoff,threaded,spacing
Hamilton Sundstrand Corporation Dba Collins Aerospace
5950-01-072-994612282754 INTERCHANGEABLE
Transformer,power
U S Army Tank Automotive Command Amsta-Im-Mm
5950-01-348-9868 INTERCHANGEABLE
Transformer,power
5310-01-382-502023521 INTERCHANGEABLE
Nut,plain,hexagon
Naval Inventory Control Point Mechanicsburg
Cross-Reference Index
Part NumberManufacturer
23-521 PRIMARY Eaton Corp Opns & Technical Center (USA)
23-521 Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc (USA)
Related Parts
5998-01-220-2243SUCCESSOR
CIRCUIT CARD ASSEMBLY
2810-00-118-9025INTERCHANGEABLE
PISTON,INTERNAL COMBUSTION ENGIN
23521
5950-00-648-5403INTERCHANGEABLE
TRANSFORMER,POWER
23521
5985-00-723-4628INTERCHANGEABLE
SEAL,RADIO FREQUENCY TRANSMISSIO
MX-1554A/U
5940-00-784-3049INTERCHANGEABLE
TERMINAL,STUD
10-910-2
3010-00-824-2684INTERCHANGEABLE
COUPLING,SHAFT,FLEXIBLE
23521
5340-00-854-0188INTERCHANGEABLE
STANDOFF,THREADED,SPACING
23521
5950-01-072-9946INTERCHANGEABLE
TRANSFORMER,POWER
12282754
5950-01-348-9868INTERCHANGEABLE
TRANSFORMER,POWER
5310-01-382-5020INTERCHANGEABLE
NUT,PLAIN,HEXAGON
23521
6130-01-442-4090INTERCHANGEABLE
BATTERY POWER SUPPLY
23521
4820-01-553-0468INTERCHANGEABLE
VALVE,SAFETY RELIEF
23521

Frequently Asked Questions

What is NSN 5999-00-035-7893?

NSN 5999-00-035-7893 is a Contact,electrical, manufactured by Eaton Corp Opns & Technical Center, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-00-035-7893?

NSN 5999-00-035-7893 has 2 cross-referenced part numbers: 23-521 (Eaton Corp Opns & Technical Center), 23-521 (Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc).

What NSN replaces 5999-00-035-7893?

There are 12 known substitutes for 5999-00-035-7893: 5998-01-220-2243, 2810-00-118-9025, 5950-00-648-5403 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 23-521?

Key specifications for 23-521: Terminal Type and Quantity: 1 CRIMP AXIALLY AT ONE END; Material: COPPER CONTACT; Overall Length: 0.982 INCHES NOMINAL IN; Precious Material and Weight: 0.005 SILVER GRAINS, TROY. 28 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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