PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40-42Contact,electrical

Eaton Corp Opns & Technical Center · NSN 5999-00-549-5686 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-549-5686 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-549-5686. Primary manufacturer part number: 40-42.
Features
  • Contact,electrical — FSC 5999
  • Unthreaded Mounting Hole Diameter: 0.156 INCHES NOMINAL IN
  • Precious Material: SILVER
  • Material: SILVER CONTACT
  • Mounting Facility Quantity: 1
  • Voltage Rating in Volts: 175.0 DC
  • Current Rating in Amps: 11.0
  • Mounting Method: UNTHREADED HOLE(S)
Applications
  • Applications requiring Silver Contact construction
General Description

The Contact,electrical, cataloged under National Stock Number 5999-00-549-5686, 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 14 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-549-5686
Primary Part Number40-42
Item NameContact,electrical
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerEaton Corp Opns & Technical Center
StatusCANCELLED
Unthreaded Mounting Hole Diameter0.156 INCHES NOMINAL IN
Precious MaterialSILVER
MaterialSILVER CONTACT
Mounting Facility Quantity1
Voltage Rating in Volts175.0 DC
Current Rating in Amps11.0
Mounting MethodUNTHREADED HOLE(S)
Unthreaded Mounting Hole Diameter0.156 INCHES NOMINAL IN
Precious MaterialSILVER
MaterialSILVER CONTACT
Mounting Facility Quantity1
Voltage Rating in Volts175.0 DC
Current Rating in Amps11.0
Mounting MethodUNTHREADED HOLE(S)
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeX
Verified Substitutes 1
5998-01-217-9046004042-001 SUCCESSOR
Circuit Card Assembly
Dynalec Corporation
Cross-Reference Index
Part NumberManufacturer
40-42 PRIMARY Eaton Corp Opns & Technical Center (USA)
Related Parts
5998-01-217-9046SUCCESSOR
CIRCUIT CARD ASSEMBLY
004042-001

Frequently Asked Questions

What is NSN 5999-00-549-5686?

NSN 5999-00-549-5686 is a Contact,electrical, manufactured by Eaton Corp Opns & Technical Center, classified under FSC 5999 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5999-00-549-5686?

NSN 5999-00-549-5686 has 1 cross-referenced part number: 40-42 (Eaton Corp Opns & Technical Center).

What NSN replaces 5999-00-549-5686?

There is 1 known substitute for 5999-00-549-5686: 5998-01-217-9046. Verify interchangeability with system specifications before substitution.

What are the specifications of 40-42?

Key specifications for 40-42: Unthreaded Mounting Hole Diameter: 0.156 INCHES NOMINAL IN; Precious Material: SILVER; Material: SILVER CONTACT; Mounting Facility Quantity: 1. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5999-00-549-5686 still in active supply?

NSN 5999-00-549-5686 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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