PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7221Filtering Disk,fluid

The Boeing Company Div Defense · NSN 1650-00-138-2779 · FSC 1650 · No Item Name Available
Verified by PartsTable
NSN 1650-00-138-2779 — this item is cataloged by the U.S. Government under National Stock Number 1650-00-138-2779. Primary manufacturer part number: 7221.
Features
  • Filtering Disk,fluid — FSC 1650
  • Style Designator: ROUND (BASICALLY FLAT)
  • Body Diameter: 0.368 INCHES NOMINAL IN
  • Filtering Media Design: MESH SINGLE FILTERING MEDIA RESPONSE
  • Body Thickness: 0.018 INCHES MAXIMUM IN
  • 3 verified cross-references
  • Primary manufacturer: The Boeing Company Div Defense
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Filtering Disk,fluid, cataloged under National Stock Number 1650-00-138-2779, is classified within Federal Supply Class 1650 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is The Boeing Company Div Defense. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 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: Active.

Technical Specifications
ParameterValue
NSN1650-00-138-2779
Primary Part Number7221
Item NameFiltering Disk,fluid
FSC / FSG1650 / 16 — No Item Name Available
ManufacturerThe Boeing Company Div Defense
StatusACTIVE
Style DesignatorROUND (BASICALLY FLAT)
Body Diameter0.368 INCHES NOMINAL IN
Filtering Media DesignMESH SINGLE FILTERING MEDIA RESPONSE
Body Thickness0.018 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5905-00-081-72737221 INTERCHANGEABLE
Resistor,variable,wire Wound,pre
Bi Technologies Corporation Div Bi Technologies Corp.
5930-00-128-92725169 INTERCHANGEABLE
Switch,rotary
The Bechdon Company, Llc
3110-00-155-6812022-7534 INTERCHANGEABLE
Bearing,ball,annular
Marathon Le Tourneau Co
5330-00-237-6926325W425 INTERCHANGEABLE
Seal,plain Encased
Cone Drive Operations Inc
4730-00-379-00585169 INTERCHANGEABLE
Coupling,tube
Champion Aerospace Llc
6210-00-496-25017221 INTERCHANGEABLE
Pivot Housing
Unity Manufacturing Co
6110-00-618-4171 INTERCHANGEABLE
Controller,motor
5950-00-645-0714SCC35574 INTERCHANGEABLE
Transformer,audio Frequency
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
1680-00-858-0430FA3454-101 INTERCHANGEABLE
Shroud,mechanism
Frazier Aviation Inc
5915-00-923-275108-00335-001 INTERCHANGEABLE
Filter,band Pass
Raytheon Company
Cross-Reference Index
Part NumberManufacturer
27630 Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div (USA)
7221 PRIMARY The Boeing Company Div Defense (USA)
5169 Donaldson Company, Inc. (USA)
Related Parts
5905-00-081-7273INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,PRE
7221
5930-00-128-9272INTERCHANGEABLE
SWITCH,ROTARY
5169
3110-00-155-6812INTERCHANGEABLE
BEARING,BALL,ANNULAR
022-7534
5330-00-237-6926INTERCHANGEABLE
SEAL,PLAIN ENCASED
325W425
4730-00-379-0058INTERCHANGEABLE
COUPLING,TUBE
5169
6210-00-496-2501INTERCHANGEABLE
PIVOT HOUSING
7221
6110-00-618-4171INTERCHANGEABLE
CONTROLLER,MOTOR
5950-00-645-0714INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
SCC35574
1680-00-858-0430INTERCHANGEABLE
SHROUD,MECHANISM
FA3454-101
5915-00-923-2751INTERCHANGEABLE
FILTER,BAND PASS
08-00335-001
5305-00-965-1827INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
6520-00-982-9892INTERCHANGEABLE
WHEEL,ABRASIVE
5169

Frequently Asked Questions

What is NSN 1650-00-138-2779?

NSN 1650-00-138-2779 is a Filtering Disk,fluid, manufactured by The Boeing Company Div Defense, classified under FSC 1650 (No Item Name Available). Status: active.

What are the part numbers for NSN 1650-00-138-2779?

NSN 1650-00-138-2779 has 3 cross-referenced part numbers: 27630 (Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div), 7221 (The Boeing Company Div Defense), 5169 (Donaldson Company, Inc.).

What NSN replaces 1650-00-138-2779?

There are 12 known substitutes for 1650-00-138-2779: 5905-00-081-7273, 5930-00-128-9272, 3110-00-155-6812 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7221?

Key specifications for 7221: Style Designator: ROUND (BASICALLY FLAT); Body Diameter: 0.368 INCHES NOMINAL IN; Filtering Media Design: MESH SINGLE FILTERING MEDIA RESPONSE; Body Thickness: 0.018 INCHES MAXIMUM IN. 4 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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