PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SL4221PC52Sleeve,shaft,pump

Curtiss-Wright Electro-Mechanical Corporation Div Epd · NSN 4320-00-218-3405 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-218-3405 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-218-3405. Primary manufacturer part number: SL4221PC52.
Features
  • Sleeve,shaft,pump — FSC 4320
  • Corner Shape: SQUARE ALL CORNERS
  • Body Inside Diameter: 1.5000 INCHES NOMINAL IN
  • Material: NICKEL ALLOY OVERALL
  • Material Document and Classification: QQ-N-186 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Keyway Dimension: 0.1560 INCHES NOMINAL INTERNAL KEYWAY DEPTH IN
  • Features Provided: CASEHARDENED
  • Keyway Dimension: 0.7500 INCHES NOMINAL INTERNAL KEYWAY LENGTH IN
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
  • Applications requiring Nickel Alloy Overall construction
General Description

The Sleeve,shaft,pump, cataloged under National Stock Number 4320-00-218-3405, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Div Epd. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 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
NSN4320-00-218-3405
Primary Part NumberSL4221PC52
Item NameSleeve,shaft,pump
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerCurtiss-Wright Electro-Mechanical Corporation Div Epd
StatusACTIVE
Corner ShapeSQUARE ALL CORNERS
Body Inside Diameter1.5000 INCHES NOMINAL IN
MaterialNICKEL ALLOY OVERALL
Material Document and ClassificationQQ-N-186 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Keyway Dimension0.1560 INCHES NOMINAL INTERNAL KEYWAY DEPTH IN
Features ProvidedCASEHARDENED
Keyway Dimension0.7500 INCHES NOMINAL INTERNAL KEYWAY LENGTH IN
Body Outside Diameter2.4980 INCHES NOMINAL IN
Style DesignatorSOLID, PLAIN, NO OUTSIDE FLANGES
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-155-61891309GF INTERCHANGEABLE
Bearing,ball,annular
Schatz Bearing Corporation Dba Schatz Bearing Corp
5998-00-200-58932868325-1 INTERCHANGEABLE
Holder,printed Circuit Board
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5815-00-356-3238SC-B-69472 INTERCHANGEABLE
Teletypewriter Subassembly
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
2930-00-366-0647820 INTERCHANGEABLE
Pump,cooling System,engine
Elgin Industries Inc. Dba
4310-00-757-0783MK-50022 INTERCHANGEABLE
Pumping Unit
Ingersoll-Rand Company- Parts
5330-01-120-425950020 INTERCHANGEABLE
Gasket
Sabre Engines Ltd
4730-01-260-0105239-07833 INTERCHANGEABLE
Cap,tube
The Boeing Company Div Defense
5331-01-348-83311000016436 INTERCHANGEABLE
O-Ring
Titan Wheel Corporation of Illinois
5905-01-361-491150-020 INTERCHANGEABLE
Resistor,fixed,film
Rapid Power Technologies Inc
4130-01-459-5894WW-115-0-350 INTERCHANGEABLE
Haps Vacuum System
Dcm Clean Air Products, Inc.
Cross-Reference Index
Part NumberManufacturer
SL4219PC52 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
50020 Marine Engine Specialties Div of Mesco Tectonics Inc (USA)
SL4623PC52 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
SL4750PC52 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
SL4753PC52 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
4309P Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
SL4621PC52 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
SL4221PC52 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
168565Q Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
SL4221PC52 PRIMARY Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
Related Parts
3110-00-155-6189INTERCHANGEABLE
BEARING,BALL,ANNULAR
1309GF
5998-00-200-5893INTERCHANGEABLE
HOLDER,PRINTED CIRCUIT BOARD
2868325-1
5815-00-356-3238INTERCHANGEABLE
TELETYPEWRITER SUBASSEMBLY
SC-B-69472
2930-00-366-0647INTERCHANGEABLE
PUMP,COOLING SYSTEM,ENGINE
820
4310-00-757-0783INTERCHANGEABLE
PUMPING UNIT
MK-50022
5330-01-120-4259INTERCHANGEABLE
GASKET
50020
4730-01-260-0105INTERCHANGEABLE
CAP,TUBE
239-07833
5331-01-348-8331INTERCHANGEABLE
O-RING
1000016436
5905-01-361-4911INTERCHANGEABLE
RESISTOR,FIXED,FILM
50-020
4130-01-459-5894INTERCHANGEABLE
HAPS VACUUM SYSTEM
WW-115-0-350
4720-01-584-1206INTERCHANGEABLE
TUBING,NONMETALLIC
50020
4140-01-606-8772INTERCHANGEABLE
DAMPER,DE-SMOKE
50020

Frequently Asked Questions

What is NSN 4320-00-218-3405?

NSN 4320-00-218-3405 is a Sleeve,shaft,pump, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-00-218-3405?

NSN 4320-00-218-3405 has 10 cross-referenced part numbers: SL4219PC52 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), 50020 (Marine Engine Specialties Div of Mesco Tectonics Inc), SL4623PC52 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), SL4750PC52 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), SL4753PC52 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging) and 5 more.

What NSN replaces 4320-00-218-3405?

There are 12 known substitutes for 4320-00-218-3405: 3110-00-155-6189, 5998-00-200-5893, 5815-00-356-3238 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SL4221PC52?

Key specifications for SL4221PC52: Corner Shape: SQUARE ALL CORNERS; Body Inside Diameter: 1.5000 INCHES NOMINAL IN; Material: NICKEL ALLOY OVERALL; Material Document and Classification: QQ-N-186 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 10 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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