PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40-166Contact,electrical

Eaton Corp Opns & Technical Center · NSN 5999-00-424-9827 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-424-9827 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-424-9827. Primary manufacturer part number: 40-166.
Features
  • Contact,electrical — FSC 5999
  • Precious Material and Weight: 0.100 SILVER GRAINS, TROY
  • Material: SILVER CONTACT
  • Precious Material: SILVER
  • Terminal Type and Quantity: 1 EYELET AXIALLY AT ONE END
  • Precious Material and Location: CONTACT SILVER
  • Precious Material and Weight: 0.100 SILVER GRAINS, TROY
  • Material: SILVER CONTACT
Applications
  • Applications requiring Silver Contact construction
General Description

The Contact,electrical, cataloged under National Stock Number 5999-00-424-9827, 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 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-424-9827
Primary Part Number40-166
Item NameContact,electrical
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerEaton Corp Opns & Technical Center
StatusACTIVE
Precious Material and Weight0.100 SILVER GRAINS, TROY
MaterialSILVER CONTACT
Precious MaterialSILVER
Terminal Type and Quantity1 EYELET AXIALLY AT ONE END
Precious Material and LocationCONTACT SILVER
Precious Material and Weight0.100 SILVER GRAINS, TROY
MaterialSILVER CONTACT
Precious MaterialSILVER
Terminal Type and Quantity1 EYELET AXIALLY AT ONE END
Precious Material and LocationCONTACT SILVER
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeJN
Weight0.3000 lbs
Cube0.0060 cu ft
Verified Substitutes 9
6625-01-037-0058AM0170 SUCCESSOR
Ammeter
Faria Beede Instruments, Inc. Dba Faria Beede Instruments Inc
5330-00-012-0492648690 INTERCHANGEABLE
Packing with Retainer
Parker-Hannifin Corporation Dba Pneutronics Div Composite Sealing Systems Division
5330-00-154-836324226 INTERCHANGEABLE
Seal,plain Encased
Dressta North America Ltd
3825-00-374-69243540166 INTERCHANGEABLE
Coupling Assembly,s
Sicard a Division of Smi-Snowblast Inc Dba Sicard
6680-01-149-011240166 INTERCHANGEABLE
Transmitter,liquid Quantity
Setra Systems, Inc. Dba Gems Sensors
2910-01-291-590240166 INTERCHANGEABLE
Pump,fuel,electrical
Purolator Products Co Div Motor Components, Llc
5985-01-463-70239804-20A0 INTERCHANGEABLE
Attenuator,variable
Antenna & Radome Research Associates Corp Dba Arra Inc Div Arra Inc
4820-01-548-131240166 INTERCHANGEABLE
Valve,regulating,system Pressure
Paccar Winch Inc Dba Paccar Winch Division
5310-01-556-555540166 INTERCHANGEABLE
Nut,plain,extended Washer,hexago
Fastenal Company Dba Fastenal Co
Cross-Reference Index
Part NumberManufacturer
40-166 PRIMARY Eaton Corp Opns & Technical Center (USA)
Related Parts
6625-01-037-0058SUCCESSOR
AMMETER
AM0170
5330-00-012-0492INTERCHANGEABLE
PACKING WITH RETAINER
648690
5330-00-154-8363INTERCHANGEABLE
SEAL,PLAIN ENCASED
24226
3825-00-374-6924INTERCHANGEABLE
COUPLING ASSEMBLY,S
3540166
6680-01-149-0112INTERCHANGEABLE
TRANSMITTER,LIQUID QUANTITY
40166
2910-01-291-5902INTERCHANGEABLE
PUMP,FUEL,ELECTRICAL
40166
5985-01-463-7023INTERCHANGEABLE
ATTENUATOR,VARIABLE
9804-20A0
4820-01-548-1312INTERCHANGEABLE
VALVE,REGULATING,SYSTEM PRESSURE
40166
5310-01-556-5555INTERCHANGEABLE
NUT,PLAIN,EXTENDED WASHER,HEXAGO
40166

Frequently Asked Questions

What is NSN 5999-00-424-9827?

NSN 5999-00-424-9827 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 5999-00-424-9827?

NSN 5999-00-424-9827 has 1 cross-referenced part number: 40-166 (Eaton Corp Opns & Technical Center).

What NSN replaces 5999-00-424-9827?

There are 9 known substitutes for 5999-00-424-9827: 6625-01-037-0058, 5330-00-012-0492, 5330-00-154-8363 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 40-166?

Key specifications for 40-166: Precious Material and Weight: 0.100 SILVER GRAINS, TROY; Material: SILVER CONTACT; Precious Material: SILVER; Terminal Type and Quantity: 1 EYELET AXIALLY AT ONE END. 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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