PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

704288K1Contact,electrical

L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc. · NSN 5999-00-775-0857 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-775-0857 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-775-0857. Primary manufacturer part number: 704288K1.
Features
  • Contact,electrical — FSC 5999
  • Unthreaded Mounting Hole Diameter: 0.281 INCHES NOMINAL IN
  • Current Rating in Amps: 900.0
  • Mounting Facility Quantity: 2
  • Precious Material: SILVER
  • Material: TUNGSTEN CONTACT
  • Surface Treatment: SILVER CONTACT
  • Material: TUNGSTEN BODY
Applications
  • Applications requiring Tungsten Contact construction
General Description

The Contact,electrical, cataloged under National Stock Number 5999-00-775-0857, 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 L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc.. Government technical data includes 22 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: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-775-0857
Primary Part Number704288K1
Item NameContact,electrical
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerL3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc.
StatusACTIVE
Unthreaded Mounting Hole Diameter0.281 INCHES NOMINAL IN
Current Rating in Amps900.0
Mounting Facility Quantity2
Precious MaterialSILVER
MaterialTUNGSTEN CONTACT
Surface TreatmentSILVER CONTACT
MaterialTUNGSTEN BODY
Surface TreatmentSILVER BODY
Voltage Rating in Volts500.0 AC AND 375.0 DC
Distance Between Mounting Facility Centers0.594 INCHES NOMINAL IN
Mounting MethodUNTHREADED HOLE(S)
Unthreaded Mounting Hole Diameter0.281 INCHES NOMINAL IN
Current Rating in Amps900.0
Mounting Facility Quantity2
Precious MaterialSILVER
MaterialTUNGSTEN CONTACT
Surface TreatmentSILVER CONTACT
MaterialTUNGSTEN BODY
Surface TreatmentSILVER BODY
Voltage Rating in Volts500.0 AC AND 375.0 DC
Distance Between Mounting Facility Centers0.594 INCHES NOMINAL IN
Mounting MethodUNTHREADED HOLE(S)
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeJ
Weight0.3100 lbs
Cube0.0116 cu ft
Verified Substitutes 1
5999-01-494-5779 INTERCHANGEABLE
Contact,electrical
Cross-Reference Index
Part NumberManufacturer
704288K1 PRIMARY L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc. (USA)
Related Parts
5999-01-494-5779INTERCHANGEABLE
CONTACT,ELECTRICAL

Frequently Asked Questions

What is NSN 5999-00-775-0857?

NSN 5999-00-775-0857 is a Contact,electrical, manufactured by L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc., classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-00-775-0857?

NSN 5999-00-775-0857 has 1 cross-referenced part number: 704288K1 (L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc.).

What NSN replaces 5999-00-775-0857?

There is 1 known substitute for 5999-00-775-0857: 5999-01-494-5779. Verify interchangeability with system specifications before substitution.

What are the specifications of 704288K1?

Key specifications for 704288K1: Unthreaded Mounting Hole Diameter: 0.281 INCHES NOMINAL IN; Current Rating in Amps: 900.0; Mounting Facility Quantity: 2; Precious Material: SILVER. 22 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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