PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

84129Stem,fluid Valve

Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator · NSN 4820-01-308-8321 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-308-8321 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-308-8321. Primary manufacturer part number: 84129.
Features
  • Stem,fluid Valve — FSC 4820
  • 1 verified cross-reference
  • Primary manufacturer: Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Stem,fluid Valve, cataloged under National Stock Number 4820-01-308-8321, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameStem,fluid Valve
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersEaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator (CAGE 09790)
Technical Specifications
ParameterValue
NSN4820-01-308-8321
Primary Part Number84129
Item NameStem,fluid Valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerEaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5905-01-011-3489350-4030-020 INTERCHANGEABLE
Resistor Network,fixed,film
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
5962-01-201-6827 INTERCHANGEABLE
Microcircuit,memory
5962-01-201-7748 INTERCHANGEABLE
Microcircuit,memory
5962-01-234-7245 INTERCHANGEABLE
Microcircuit,digital
5962-01-279-0149PAL20L8A-2ML/883B INTERCHANGEABLE
Microcircuit,memory
Advanced Micro Devices Inc Dba AMD Austin
5962-01-279-0150 INTERCHANGEABLE
Microcircuit,memory
5962-01-283-4324 INTERCHANGEABLE
Microcircuit,memory
5962-01-289-7422 INTERCHANGEABLE
Microcircuit,memory
5962-01-296-3569 INTERCHANGEABLE
Microcircuit,memory
5962-01-296-5444 INTERCHANGEABLE
Microcircuit,memory
Cross-Reference Index
Part NumberManufacturer
84129 PRIMARY Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator (USA)
Related Parts
5905-01-011-3489INTERCHANGEABLE
RESISTOR NETWORK,FIXED,FILM
350-4030-020
5962-01-201-6827INTERCHANGEABLE
MICROCIRCUIT,MEMORY
5962-01-201-7748INTERCHANGEABLE
MICROCIRCUIT,MEMORY
5962-01-234-7245INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
5962-01-279-0149INTERCHANGEABLE
MICROCIRCUIT,MEMORY
PAL20L8A-2ML/883B
5962-01-279-0150INTERCHANGEABLE
MICROCIRCUIT,MEMORY
5962-01-283-4324INTERCHANGEABLE
MICROCIRCUIT,MEMORY
5962-01-289-7422INTERCHANGEABLE
MICROCIRCUIT,MEMORY
5962-01-296-3569INTERCHANGEABLE
MICROCIRCUIT,MEMORY
5962-01-296-5444INTERCHANGEABLE
MICROCIRCUIT,MEMORY
5962-01-298-2294INTERCHANGEABLE
MICROCIRCUIT,MEMORY
5962-01-305-3124INTERCHANGEABLE
MICROCIRCUIT,DIGITAL

Frequently Asked Questions

What is NSN 4820-01-308-8321?

NSN 4820-01-308-8321 is a Stem,fluid Valve, manufactured by Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-308-8321?

NSN 4820-01-308-8321 has 1 cross-referenced part number: 84129 (Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator).

What NSN replaces 4820-01-308-8321?

There are 12 known substitutes for 4820-01-308-8321: 5905-01-011-3489, 5962-01-201-6827, 5962-01-201-7748 and 9 more. Verify interchangeability with system specifications before substitution.

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