PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

RW76228Ring,wearing

Curtiss-Wright Electro-Mechanical Corporation Div Epd · NSN 4320-00-398-8332 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-398-8332 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-398-8332. Primary manufacturer part number: RW76228.
Features
  • Ring,wearing — FSC 4320
  • Right Side Flange Thickness: 0.375 INCHES NOMINAL IN
  • Body Outside Diameter: 10.746 INCHES MINIMUM AND 10.748 INCHES MAXIMUM IN
  • Corner Radius: 0.625 INCHES NOMINAL INSIDE RIGHT CORNER IN
  • Distance Below Centerline: 0.125 INCHES NOMINAL IN
  • End to Flange Distance: 1.125 INCHES NOMINAL IN
  • Corner Shape: SQUARE OUTSIDE LEFT CORNER
  • Left Side Flange Thickness: 0.375 INCHES NOMINAL IN
Applications
  • Applications requiring Nickel Alloy construction
General Description

The Ring,wearing, cataloged under National Stock Number 4320-00-398-8332, 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 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-00-398-8332
Primary Part NumberRW76228
Item NameRing,wearing
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerCurtiss-Wright Electro-Mechanical Corporation Div Epd
StatusACTIVE
Right Side Flange Thickness0.375 INCHES NOMINAL IN
Body Outside Diameter10.746 INCHES MINIMUM AND 10.748 INCHES MAXIMUM IN
Corner Radius0.625 INCHES NOMINAL INSIDE RIGHT CORNER IN
Distance Below Centerline0.125 INCHES NOMINAL IN
End to Flange Distance1.125 INCHES NOMINAL IN
Corner ShapeSQUARE OUTSIDE LEFT CORNER
Left Side Flange Thickness0.375 INCHES NOMINAL IN
Corner ShapeROUND INSIDE RIGHT CORNER
Body Inside Diameter10.000 INCHES MINIMUM AND 10.003 INCHES MAXIMUM IN
Smallest External Anchor Flange Radius5.312 INCHES NOMINAL IN
Distance From End0.500 INCHES NOMINAL IN
Surface Finish125.0 MICROINCHES ALL SURFACES
Internal Flange Inside Diameter8.375 INCHES NOMINAL IN
Body StyleINTERNAL FLANGE W/EXTERNAL LOCKING FLANGE
Internal Flange Width0.375 INCHES NOMINAL IN
Distance Between Flanges0.750 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN
Largest External Anchor Flange Radius5.656 INCHES NOMINAL IN
Corner ShapeSQUARE OUTSIDE RIGHT CORNER
Corner ShapeSQUARE INSIDE LEFT CORNER
MaterialNICKEL ALLOY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
3110-00-100-0378 INTERCHANGEABLE
Cup,tapered Roller Bearing
3110-00-191-0508309517 INTERCHANGEABLE
Ball,bearing
Lockheed Martin Corporation Div Rms - Mitchel Field
4320-00-218-37589535P INTERCHANGEABLE
Cover,hydraulic,pump-Motor
Curtiss-Wright Electro-Mechanical Corporation Div Epd
4320-00-218-37599536P INTERCHANGEABLE
Cover,hydraulic,pump-Motor
Curtiss-Wright Electro-Mechanical Corporation Div Epd
5360-01-107-7867 INTERCHANGEABLE
Spring,helical,compression
Cross-Reference Index
Part NumberManufacturer
RW76228 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
RW76228 PRIMARY Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
309517 Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
309517 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
9054P Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
9054P Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
Related Parts
3110-00-100-0378INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
3110-00-191-0508INTERCHANGEABLE
BALL,BEARING
309517
4320-00-218-3758INTERCHANGEABLE
COVER,HYDRAULIC,PUMP-MOTOR
9535P
4320-00-218-3759INTERCHANGEABLE
COVER,HYDRAULIC,PUMP-MOTOR
9536P
5360-01-107-7867INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION

Frequently Asked Questions

What is NSN 4320-00-398-8332?

NSN 4320-00-398-8332 is a Ring,wearing, 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 4320-00-398-8332?

NSN 4320-00-398-8332 has 6 cross-referenced part numbers: RW76228 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), RW76228 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 309517 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 309517 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), 9054P (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging) and 1 more.

What NSN replaces 4320-00-398-8332?

There are 5 known substitutes for 4320-00-398-8332: 3110-00-100-0378, 3110-00-191-0508, 4320-00-218-3758 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of RW76228?

Key specifications for RW76228: Right Side Flange Thickness: 0.375 INCHES NOMINAL IN; Body Outside Diameter: 10.746 INCHES MINIMUM AND 10.748 INCHES MAXIMUM IN; Corner Radius: 0.625 INCHES NOMINAL INSIDE RIGHT CORNER IN; Distance Below Centerline: 0.125 INCHES NOMINAL IN. 21 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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