PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8-0209-01Sleeve,shaft,pump

Air & Liquid Systems Corporation Dba Buffalo Pumps · NSN 4320-01-423-6527 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-423-6527 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-423-6527. Primary manufacturer part number: 8-0209-01.
Features
  • Sleeve,shaft,pump — FSC 4320
  • Body Outside Diameter: 4.0000 INCHES NOMINAL IN
  • Material Document and Classification: ASTM B164,ALLOY 400 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Body Inside Diameter: 3.6250 INCHES NOMINAL IN
  • Material: NICKEL ALLOY 400 OVERALL
  • 4 verified cross-references
  • Primary manufacturer: Air & Liquid Systems Corporation Dba Buffalo Pumps
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
  • Applications requiring Nickel Alloy 400 Overall construction
General Description

The Sleeve,shaft,pump, cataloged under National Stock Number 4320-01-423-6527, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Air & Liquid Systems Corporation Dba Buffalo Pumps. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-01-423-6527
Primary Part Number8-0209-01
Item NameSleeve,shaft,pump
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerAir & Liquid Systems Corporation Dba Buffalo Pumps
StatusACTIVE
Body Outside Diameter4.0000 INCHES NOMINAL IN
Material Document and ClassificationASTM B164,ALLOY 400 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Body Inside Diameter3.6250 INCHES NOMINAL IN
MaterialNICKEL ALLOY 400 OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5315-00-913-0963802090-1 INTERCHANGEABLE
Pin,straight,headless
Honeywell International Inc. Div Aerospace - Torrance
4320-01-423-43469-0566-01 INTERCHANGEABLE
Ring,wearing
Air & Liquid Systems Corporation Dba Buffalo Pumps
4320-01-423-44256823-42 INTERCHANGEABLE
Deflector,dirt and Liquid
Air & Liquid Systems Corporation Dba Buffalo Pumps
4320-01-423-44276823-43 INTERCHANGEABLE
Deflector,dirt and Liquid
Air & Liquid Systems Corporation Dba Buffalo Pumps
4320-01-423-56843-0442-01 INTERCHANGEABLE
Impeller,pump,centrifugal
Air & Liquid Systems Corporation Dba Buffalo Pumps
4320-01-423-65008-0207-01 INTERCHANGEABLE
Sleeve,shaft,pump
Air & Liquid Systems Corporation Dba Buffalo Pumps
Cross-Reference Index
Part NumberManufacturer
NA1781 Air & Liquid Systems Corporation Dba Buffalo Pumps (USA)
8-0209-01 PRIMARY Air & Liquid Systems Corporation Dba Buffalo Pumps (USA)
PL.16VHSM-1 ITEM 8B Air & Liquid Systems Corporation Dba Buffalo Pumps (USA)
NA1798 Air & Liquid Systems Corporation Dba Buffalo Pumps (USA)
Related Parts
5315-00-913-0963INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
802090-1
4320-01-423-4346INTERCHANGEABLE
RING,WEARING
9-0566-01
4320-01-423-4425INTERCHANGEABLE
DEFLECTOR,DIRT AND LIQUID
6823-42
4320-01-423-4427INTERCHANGEABLE
DEFLECTOR,DIRT AND LIQUID
6823-43
4320-01-423-5684INTERCHANGEABLE
IMPELLER,PUMP,CENTRIFUGAL
3-0442-01
4320-01-423-6500INTERCHANGEABLE
SLEEVE,SHAFT,PUMP
8-0207-01

Frequently Asked Questions

What is NSN 4320-01-423-6527?

NSN 4320-01-423-6527 is a Sleeve,shaft,pump, manufactured by Air & Liquid Systems Corporation Dba Buffalo Pumps, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-01-423-6527?

NSN 4320-01-423-6527 has 4 cross-referenced part numbers: NA1781 (Air & Liquid Systems Corporation Dba Buffalo Pumps), 8-0209-01 (Air & Liquid Systems Corporation Dba Buffalo Pumps), PL.16VHSM-1 ITEM 8B (Air & Liquid Systems Corporation Dba Buffalo Pumps), NA1798 (Air & Liquid Systems Corporation Dba Buffalo Pumps).

What NSN replaces 4320-01-423-6527?

There are 6 known substitutes for 4320-01-423-6527: 5315-00-913-0963, 4320-01-423-4346, 4320-01-423-4425 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8-0209-01?

Key specifications for 8-0209-01: Body Outside Diameter: 4.0000 INCHES NOMINAL IN; Overall Length: 4.8750 INCHES NOMINAL IN; Material Document and Classification: ASTM B164,ALLOY 400 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; End Item Identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS. 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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