PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21-481Contact,electrical

Eaton Corp Opns & Technical Center · NSN 5999-00-419-1953 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-419-1953 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-419-1953. Primary manufacturer part number: 21-481.
Features
  • Contact,electrical — FSC 5999
  • Mounting Method: UNTHREADED HOLE(S)
  • Material: COPPER BODY
  • Unthreaded Mounting Hole Diameter: 0.250 INCHES NOMINAL IN
  • Material: COPPER CONTACT
  • Distance Between Mounting Facility Centers: 1.000 INCHES NOMINAL IN
  • Mounting Facility Quantity: 2
  • Mounting Method: UNTHREADED HOLE(S)
Applications
  • Applications requiring Copper Body construction
General Description

The Contact,electrical, cataloged under National Stock Number 5999-00-419-1953, 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 12 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-419-1953
Primary Part Number21-481
Item NameContact,electrical
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerEaton Corp Opns & Technical Center
StatusACTIVE
Mounting MethodUNTHREADED HOLE(S)
MaterialCOPPER BODY
Unthreaded Mounting Hole Diameter0.250 INCHES NOMINAL IN
MaterialCOPPER CONTACT
Distance Between Mounting Facility Centers1.000 INCHES NOMINAL IN
Mounting Facility Quantity2
Mounting MethodUNTHREADED HOLE(S)
MaterialCOPPER BODY
Unthreaded Mounting Hole Diameter0.250 INCHES NOMINAL IN
MaterialCOPPER CONTACT
Distance Between Mounting Facility Centers1.000 INCHES NOMINAL IN
Mounting Facility Quantity2
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeY
Verified Substitutes 6
4820-00-305-44282148-1 INTERCHANGEABLE
Valve,stop-Check
Tactair Fluid Controls Inc Western Hydraulics Div
1660-00-520-5598 INTERCHANGEABLE
Cable Assy,housing
6130-01-102-6740 INTERCHANGEABLE
Power Supply
5905-01-178-4025 INTERCHANGEABLE
Resistor,variable,wire Wound,non
5133-01-443-307621481 INTERCHANGEABLE
Drill,twist
Time Fastener Co Inc
5985-01-696-50002148-1 INTERCHANGEABLE
Antenna
L3harris Technologies, Inc. Dba Harris Corp Div Harris Defense Communications
Cross-Reference Index
Part NumberManufacturer
21-481 PRIMARY Eaton Corp Opns & Technical Center (USA)
Related Parts
4820-00-305-4428INTERCHANGEABLE
VALVE,STOP-CHECK
2148-1
1660-00-520-5598INTERCHANGEABLE
CABLE ASSY,HOUSING
6130-01-102-6740INTERCHANGEABLE
POWER SUPPLY
5905-01-178-4025INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
5133-01-443-3076INTERCHANGEABLE
DRILL,TWIST
21481
5985-01-696-5000INTERCHANGEABLE
ANTENNA
2148-1

Frequently Asked Questions

What is NSN 5999-00-419-1953?

NSN 5999-00-419-1953 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 5999-00-419-1953?

NSN 5999-00-419-1953 has 1 cross-referenced part number: 21-481 (Eaton Corp Opns & Technical Center).

What NSN replaces 5999-00-419-1953?

There are 6 known substitutes for 5999-00-419-1953: 4820-00-305-4428, 1660-00-520-5598, 6130-01-102-6740 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21-481?

Key specifications for 21-481: Mounting Method: UNTHREADED HOLE(S); Material: COPPER BODY; Unthreaded Mounting Hole Diameter: 0.250 INCHES NOMINAL IN; Material: COPPER CONTACT. 12 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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