PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AN6204-1AValve,bleeder,hydraulic System

Aeronautical Standards Group Dept of Navy and Air Force · NSN 4820-00-516-8438 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-516-8438 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-516-8438. Primary manufacturer part number: AN6204-1A.
Features
  • Valve,bleeder,hydraulic System — FSC 4820
  • 22 verified cross-references
  • Primary manufacturer: Aeronautical Standards Group Dept of Navy and Air Force
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,bleeder,hydraulic System, cataloged under National Stock Number 4820-00-516-8438, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Aeronautical Standards Group Dept of Navy and Air Force. This item has 22 commercial cross-references from 18 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NameValve,bleeder,hydraulic System
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersAeronautical Standards Group Dept of Navy and Air Force (CAGE 88044); Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters (CAGE 45681); U S Army Tank Automotive Command Amsta-Im-Mm (CAGE 19207); E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales (CAGE A00AM); Valcor Engineering Corporation (CAGE 96487)
Technical Specifications
ParameterValue
NSN4820-00-516-8438
Primary Part NumberAN6204-1A
Item NameValve,bleeder,hydraulic System
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerAeronautical Standards Group Dept of Navy and Air Force
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4310-00-034-8609217957 INTERCHANGEABLE
Piston,compressor
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
2825-00-036-3411 INTERCHANGEABLE
Collar,thrust
4320-00-043-8158 INTERCHANGEABLE
Sleeve,shaft,pump
3120-00-072-97192933 INTERCHANGEABLE
Bushing,sleeve
Kay Elemetrics Corporation
4820-00-119-372510861507 INTERCHANGEABLE
Valve,bleeder,hydraulic System
U S Army Tank Automotive Command Amsta-Im-Mm
3120-00-133-6641226445 INTERCHANGEABLE
Bearing,washer,thrust
Dana Off Highway Products, Llc
3110-00-158-61901664510 INTERCHANGEABLE
Bearing,ball,thrust
Chrysler Realty Company Llc Dba Daimler Chrysler
6625-00-511-6224A841 INTERCHANGEABLE
Tester
Scott Fetzer Company, the Dba Meriam Process Technologies Div Meriam Instrument
1730-00-632-84252933-010 INTERCHANGEABLE
Jack,aircraft Landing Gear
Columbus Jack Corporation Div Columbus Jack
5360-00-664-4302679774 INTERCHANGEABLE
Spring,helical,compression
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
Cross-Reference Index
Part NumberManufacturer
AN6204-1A Aeronautical Standards Group Dept of Navy and Air Force (USA)
2-2644-5 Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters (USA)
8176638 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
4840005168438 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
203867 Valcor Engineering Corporation (USA)
3X84211 Eaton Aerospace, Llc Dba Jackson South (USA)
8176638 Us Army Aviation and Missile Command (USA)
2-2644-5 Parker Hannifin Corporation Div Aerospace Group Headquarters (USA)
4820PL0894584 Jednolity Indeks Materialowy - Uniform Material Index (POL)
15745-84 Calgon Carbon Uv Technologies Llc Dba Hyde Marine (USA)
4820PL1590539 Jednolity Indeks Materialowy - Uniform Material Index (POL)
4820005168438 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
AN6204-1 Aeronautical Standards Group Dept of Navy and Air Force (USA)
AN6204-1 Leonardo Spa Helicopters Division - Production Site (ITA)
FC6446 Aircraft Wheel and Brake, Llc Dba Cleveland Wheel and Brake Systems (USA)
9594781624 Pilatus Aircraft Ltd (CHE)
203867 Kidde-Fenwal, Llc (USA)
AN6204-3A Aeronautical Standards Group Dept of Navy and Air Force (USA)
2933 Fairbanks Co the (USA)
A84-1 Goodrich Corporation (USA)
Related Parts
4310-00-034-8609INTERCHANGEABLE
PISTON,COMPRESSOR
217957
2825-00-036-3411INTERCHANGEABLE
COLLAR,THRUST
4320-00-043-8158INTERCHANGEABLE
SLEEVE,SHAFT,PUMP
3120-00-072-9719INTERCHANGEABLE
BUSHING,SLEEVE
2933
4820-00-119-3725INTERCHANGEABLE
VALVE,BLEEDER,HYDRAULIC SYSTEM
10861507
3120-00-133-6641INTERCHANGEABLE
BEARING,WASHER,THRUST
226445
3110-00-158-6190INTERCHANGEABLE
BEARING,BALL,THRUST
1664510
6625-00-511-6224INTERCHANGEABLE
TESTER
A841
1730-00-632-8425INTERCHANGEABLE
JACK,AIRCRAFT LANDING GEAR
2933-010
5360-00-664-4302INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
679774
6920-00-674-6676INTERCHANGEABLE
FAIRING ASSY,NOSE
5940-00-827-3174INTERCHANGEABLE
ADAPTER,RADIO FREQUENCY CABLE
54B7237H04

Frequently Asked Questions

What is NSN 4820-00-516-8438?

NSN 4820-00-516-8438 is a Valve,bleeder,hydraulic System, manufactured by Aeronautical Standards Group Dept of Navy and Air Force, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-516-8438?

NSN 4820-00-516-8438 has 22 cross-referenced part numbers: AN6204-1A (Aeronautical Standards Group Dept of Navy and Air Force), 2-2644-5 (Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters), 8176638 (U S Army Tank Automotive Command Amsta-Im-Mm), 4840005168438 (E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales), 203867 (Valcor Engineering Corporation) and 17 more.

What NSN replaces 4820-00-516-8438?

There are 12 known substitutes for 4820-00-516-8438: 4310-00-034-8609, 2825-00-036-3411, 4320-00-043-8158 and 9 more. Verify interchangeability with system specifications before substitution.

Is NSN 4820-00-516-8438 still in active supply?

NSN 4820-00-516-8438 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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