PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21-519Contact,electrical

Eaton Corp Opns & Technical Center · NSN 5999-00-030-1925 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-030-1925 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-030-1925. Primary manufacturer part number: 21-519.
Features
  • Contact,electrical — FSC 5999
  • Precious Material and Location: EXTERNAL SURFACE SILVER
  • Material: COPPER ALLOY CONTACT
  • Style Designator: FLAT LEAF CONTACT W/ ROUND FIXED POINT
  • Material: COPPER ALLOY BODY
  • Mounting Facility Quantity: 1
  • Unthreaded Mounting Hole Diameter: 0.020 INCHES NOMINAL IN
  • Surface Treatment: SILVER CONTACT
Applications
  • Applications requiring Copper Alloy Contact construction
General Description

The Contact,electrical, cataloged under National Stock Number 5999-00-030-1925, 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 24 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-030-1925
Primary Part Number21-519
Item NameContact,electrical
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerEaton Corp Opns & Technical Center
StatusACTIVE
Precious Material and LocationEXTERNAL SURFACE SILVER
MaterialCOPPER ALLOY CONTACT
Style DesignatorFLAT LEAF CONTACT W/ ROUND FIXED POINT
MaterialCOPPER ALLOY BODY
Mounting Facility Quantity1
Unthreaded Mounting Hole Diameter0.020 INCHES NOMINAL IN
Surface TreatmentSILVER CONTACT
Mounting MethodUNTHREADED HOLE(S)
Surface TreatmentSILVER BODY
Precious MaterialSILVER
Point Diameter0.312 INCHES NOMINAL IN
Precious Material and Weight0.005 SILVER GRAINS, TROY
Precious Material and LocationEXTERNAL SURFACE SILVER
MaterialCOPPER ALLOY CONTACT
Style DesignatorFLAT LEAF CONTACT W/ ROUND FIXED POINT
MaterialCOPPER ALLOY BODY
Mounting Facility Quantity1
Unthreaded Mounting Hole Diameter0.020 INCHES NOMINAL IN
Surface TreatmentSILVER CONTACT
Mounting MethodUNTHREADED HOLE(S)
Surface TreatmentSILVER BODY
Precious MaterialSILVER
Point Diameter0.312 INCHES NOMINAL IN
Precious Material and Weight0.005 SILVER GRAINS, TROY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeX
Verified Substitutes 4
5977-00-577-815333562-27H3 INTERCHANGEABLE
Brush Set,electrical Contact
Continental Electric Motors, Inc.
3040-01-192-599124519 INTERCHANGEABLE
Head,linear Actuating Cylinder
Moog Inc. Dba Ampac-Isp Corp
3040-01-423-746821519 INTERCHANGEABLE
Shaft,shouldered
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
6515-01-540-161121519 INTERCHANGEABLE
Probe,general Operating
Nova Biomedical Corp
Cross-Reference Index
Part NumberManufacturer
21-519 PRIMARY Eaton Corp Opns & Technical Center (USA)
Related Parts
5977-00-577-8153INTERCHANGEABLE
BRUSH SET,ELECTRICAL CONTACT
33562-27H3
3040-01-192-5991INTERCHANGEABLE
HEAD,LINEAR ACTUATING CYLINDER
24519
3040-01-423-7468INTERCHANGEABLE
SHAFT,SHOULDERED
21519
6515-01-540-1611INTERCHANGEABLE
PROBE,GENERAL OPERATING
21519

Frequently Asked Questions

What is NSN 5999-00-030-1925?

NSN 5999-00-030-1925 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 5999-00-030-1925?

NSN 5999-00-030-1925 has 1 cross-referenced part number: 21-519 (Eaton Corp Opns & Technical Center).

What NSN replaces 5999-00-030-1925?

There are 4 known substitutes for 5999-00-030-1925: 5977-00-577-8153, 3040-01-192-5991, 3040-01-423-7468 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21-519?

Key specifications for 21-519: Precious Material and Location: EXTERNAL SURFACE SILVER; Material: COPPER ALLOY CONTACT; Style Designator: FLAT LEAF CONTACT W/ ROUND FIXED POINT; Material: COPPER ALLOY BODY. 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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