PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

422176-8Contact,electrical

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 5999-00-549-5561 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-549-5561 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-549-5561. Primary manufacturer part number: 422176-8.
Features
  • Contact,electrical — FSC 5999
  • Material: COPPER CONTACT
  • Surface Treatment: SILVER BODY
  • Surface Treatment: SILVER CONTACT
  • Precious Material and Weight: 0.005 SILVER GRAINS, TROY
  • Material: COPPER BODY
  • Precious Material: SILVER
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
Applications
  • Applications requiring Copper Contact construction
General Description

The Contact,electrical, cataloged under National Stock Number 5999-00-549-5561, 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 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-549-5561
Primary Part Number422176-8
Item NameContact,electrical
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusCANCELLED
MaterialCOPPER CONTACT
Surface TreatmentSILVER BODY
Surface TreatmentSILVER CONTACT
Precious Material and Weight0.005 SILVER GRAINS, TROY
MaterialCOPPER BODY
Precious MaterialSILVER
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Distance Between Mounting Facility Centers0.844 INCHES NOMINAL IN
Mounting MethodTHREADED HOLE(S) AND UNTHREADED HOLE(S)
Nominal Thread Size0.164 INCHES IN
Unthreaded Mounting Hole Diameter0.203 INCHES NOMINAL IN
Mounting Facility Quantity2
MaterialCOPPER CONTACT
Surface TreatmentSILVER BODY
Surface TreatmentSILVER CONTACT
Precious Material and Weight0.005 SILVER GRAINS, TROY
MaterialCOPPER BODY
Precious MaterialSILVER
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Distance Between Mounting Facility Centers0.844 INCHES NOMINAL IN
Mounting MethodTHREADED HOLE(S) AND UNTHREADED HOLE(S)
Nominal Thread Size0.164 INCHES IN
Unthreaded Mounting Hole Diameter0.203 INCHES NOMINAL IN
Mounting Facility Quantity2
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeX
Verified Substitutes 12
5950-00-205-9559 INTERCHANGEABLE
Transformer,power
5820-00-310-016623520 INTERCHANGEABLE
Autotune Mechanism
Naval Ship Systems Command
2925-00-497-534623520 INTERCHANGEABLE
Pipe Asy Mag
Vse Aviation, Inc.
5960-00-686-85125904 INTERCHANGEABLE
Electron Tube
General Dynamics Mission Systems, Inc.
2805-00-708-3546200387 INTERCHANGEABLE
Ring
Renk America Llc Div Renk America
8115-00-935-59045904 INTERCHANGEABLE
Box,shipping
Connecticut Container Corp. Dba Connecticut Container Corp
4820-00-945-93085904 INTERCHANGEABLE
Valve,lift-Check
Tactair Fluid Controls Inc
3040-01-009-381401009403 INTERCHANGEABLE
Lever,manual Control
Orscheln Products Llc
4820-01-036-74305904 INTERCHANGEABLE
Valve,angle
Dragon Valves Inc
5905-01-060-90735904 INTERCHANGEABLE
Holder,resistor
Ohmite Holding, L.l.c. Dba Ohmite Manufacturing
Cross-Reference Index
Part NumberManufacturer
5904 Eaton Corp Opns & Technical Center (USA)
23-520 Eaton Corp Opns & Technical Center (USA)
23-520 Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc (USA)
422176-8 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
Related Parts
5950-00-205-9559INTERCHANGEABLE
TRANSFORMER,POWER
5820-00-310-0166INTERCHANGEABLE
AUTOTUNE MECHANISM
23520
2925-00-497-5346INTERCHANGEABLE
PIPE ASY MAG
23520
5960-00-686-8512INTERCHANGEABLE
ELECTRON TUBE
5904
2805-00-708-3546INTERCHANGEABLE
RING
200387
8115-00-935-5904INTERCHANGEABLE
BOX,SHIPPING
5904
4820-00-945-9308INTERCHANGEABLE
VALVE,LIFT-CHECK
5904
3040-01-009-3814INTERCHANGEABLE
LEVER,MANUAL CONTROL
01009403
4820-01-036-7430INTERCHANGEABLE
VALVE,ANGLE
5904
5905-01-060-9073INTERCHANGEABLE
HOLDER,RESISTOR
5904
5970-01-202-0114INTERCHANGEABLE
INSULATOR,PLATE
23520
2040-01-272-5178INTERCHANGEABLE
SLAT,SPECIAL
5904

Frequently Asked Questions

What is NSN 5999-00-549-5561?

NSN 5999-00-549-5561 is a Contact,electrical, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5999 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5999-00-549-5561?

NSN 5999-00-549-5561 has 4 cross-referenced part numbers: 5904 (Eaton Corp Opns & Technical Center), 23-520 (Eaton Corp Opns & Technical Center), 23-520 (Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc), 422176-8 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).

What NSN replaces 5999-00-549-5561?

There are 12 known substitutes for 5999-00-549-5561: 5950-00-205-9559, 5820-00-310-0166, 2925-00-497-5346 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 422176-8?

Key specifications for 422176-8: Material: COPPER CONTACT; Surface Treatment: SILVER BODY; Surface Treatment: SILVER CONTACT; Precious Material and Weight: 0.005 SILVER GRAINS, TROY. 24 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5999-00-549-5561 still in active supply?

NSN 5999-00-549-5561 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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