PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A8850Disk and Seat Set,valve

Eaton Aerospace Llc Div Fluid and Electrical Distribution Division · NSN 4820-00-229-1673 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-229-1673 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-229-1673. Primary manufacturer part number: A8850.
Features
  • Disk and Seat Set,valve — FSC 4820
  • 4 verified cross-references
  • Primary manufacturer: Eaton Aerospace Llc Div Fluid and Electrical Distribution Division
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Disk and Seat Set,valve, cataloged under National Stock Number 4820-00-229-1673, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Eaton Aerospace Llc Div Fluid and Electrical Distribution Division. This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameDisk and Seat Set,valve
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersSatair A/s (CAGE R1120); Kitco Llc (CAGE 34087); Hamilton Sundstrand Corporation (CAGE 99167); Eaton Aerospace Llc Div Fluid and Electrical Distribution Division (CAGE 97484)
Technical Specifications
ParameterValue
NSN4820-00-229-1673
Primary Part NumberA8850
Item NameDisk and Seat Set,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerEaton Aerospace Llc Div Fluid and Electrical Distribution Division
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
3110-00-100-31010051438-0 INTERCHANGEABLE
Cone and Rollers,tapered Roller
New Holland Construction
5310-00-559-5487A8850 INTERCHANGEABLE
Washer,spring Tension
Skurka Aerospace Inc
Cross-Reference Index
Part NumberManufacturer
A8850 Satair A/s (DNK)
705328 Kitco Llc (USA)
705328 Hamilton Sundstrand Corporation (USA)
A8850 PRIMARY Eaton Aerospace Llc Div Fluid and Electrical Distribution Division (USA)
Related Parts
3110-00-100-3101INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
0051438-0
5310-00-559-5487INTERCHANGEABLE
WASHER,SPRING TENSION
A8850

Frequently Asked Questions

What is NSN 4820-00-229-1673?

NSN 4820-00-229-1673 is a Disk and Seat Set,valve, manufactured by Eaton Aerospace Llc Div Fluid and Electrical Distribution Division, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-229-1673?

NSN 4820-00-229-1673 has 4 cross-referenced part numbers: A8850 (Satair A/s), 705328 (Kitco Llc), 705328 (Hamilton Sundstrand Corporation), A8850 (Eaton Aerospace Llc Div Fluid and Electrical Distribution Division).

What NSN replaces 4820-00-229-1673?

There are 2 known substitutes for 4820-00-229-1673: 3110-00-100-3101, 5310-00-559-5487. Verify interchangeability with system specifications before substitution.

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