PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

HS4084-3Breather

The Boeing Company · NSN 2810-01-163-7028 · FSC 2810 · No Item Name Available
Verified by PartsTable
NSN 2810-01-163-7028 — this item is cataloged by the U.S. Government under National Stock Number 2810-01-163-7028. Primary manufacturer part number: HS4084-3.
Features
  • Breather — FSC 2810
  • Outside Diameter: 0.750 INCHES NOMINAL IN
  • Connection Type: THREADED
  • Thread Size and Series/type Designator: 9/16-18 UNF
  • Body Material: ALUMINUM ALLOY
  • 4 verified cross-references
  • Primary manufacturer: The Boeing Company
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Breather, cataloged under National Stock Number 2810-01-163-7028, is classified within Federal Supply Class 2810 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is The Boeing Company. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). 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.

Technical Specifications
ParameterValue
NSN2810-01-163-7028
Primary Part NumberHS4084-3
Item NameBreather
FSC / FSG2810 / 28 — No Item Name Available
ManufacturerThe Boeing Company
StatusACTIVE
Outside Diameter0.750 INCHES NOMINAL IN
Connection TypeTHREADED
Thread Size and Series/type Designator9/16-18 UNF
Body MaterialALUMINUM ALLOY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5945-00-295-315131-80508-1 INTERCHANGEABLE
Relay,electromagnetic
General Dynamics Mission Systems, Inc.
2910-00-987-3661A8846 INTERCHANGEABLE
Plunger,breaker
Stewart Avionics Inc
Cross-Reference Index
Part NumberManufacturer
P4084-3 Precision Aircraft Machining Company, Inc. Dba Pamco Div Precision Aircraft Machining Co Dba Pamco (USA)
HS4084-3 Mcdonnell Douglas Helicopter Co Inc (USA)
HS4084-3 PRIMARY The Boeing Company (USA)
A8846 PRIMARY Eaton Aerospace Llc Div Fluid and Electrical Distribution Division (USA)
Related Parts
5945-00-295-3151INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
31-80508-1
2910-00-987-3661INTERCHANGEABLE
PLUNGER,BREAKER
A8846

Frequently Asked Questions

What is NSN 2810-01-163-7028?

NSN 2810-01-163-7028 is a Breather, manufactured by The Boeing Company, classified under FSC 2810 (No Item Name Available). Status: active.

What are the part numbers for NSN 2810-01-163-7028?

NSN 2810-01-163-7028 has 4 cross-referenced part numbers: P4084-3 (Precision Aircraft Machining Company, Inc. Dba Pamco Div Precision Aircraft Machining Co Dba Pamco), HS4084-3 (Mcdonnell Douglas Helicopter Co Inc), HS4084-3 (The Boeing Company), A8846 (Eaton Aerospace Llc Div Fluid and Electrical Distribution Division).

What NSN replaces 2810-01-163-7028?

There are 2 known substitutes for 2810-01-163-7028: 5945-00-295-3151, 2910-00-987-3661. Verify interchangeability with system specifications before substitution.

What are the specifications of HS4084-3?

Key specifications for HS4084-3: Outside Diameter: 0.750 INCHES NOMINAL IN; Connection Type: THREADED; Thread Size and Series/type Designator: 9/16-18 UNF; Body Material: ALUMINUM ALLOY. 7 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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