PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

954PRing,wearing

Curtiss-Wright Electro-Mechanical Corporation Div Epd · NSN 4320-00-398-8504 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-398-8504 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-398-8504. Primary manufacturer part number: 954P.
Features
  • Ring,wearing — FSC 4320
  • Bolt Hole Quantity: 6
  • Counterbore Depth: 0.250 INCHES NOMINAL IN
  • Body Outside Diameter: 5.374 INCHES NOMINAL IN
  • Counterbore Diameter: 0.438 INCHES NOMINAL IN
  • Body Inside Diameter: 4.845 INCHES NOMINAL IN
  • Corner Shape: SQUARE ALL CORNERS
  • Unthreaded Mounting Hole Diameter: 0.281 INCHES NOMINAL IN
Applications
  • Applications requiring Nickel Alloy construction
General Description

The Ring,wearing, cataloged under National Stock Number 4320-00-398-8504, 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 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-00-398-8504
Primary Part Number954P
Item NameRing,wearing
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerCurtiss-Wright Electro-Mechanical Corporation Div Epd
StatusACTIVE
Bolt Hole Quantity6
Counterbore Depth0.250 INCHES NOMINAL IN
Body Outside Diameter5.374 INCHES NOMINAL IN
Counterbore Diameter0.438 INCHES NOMINAL IN
Body Inside Diameter4.845 INCHES NOMINAL IN
Corner ShapeSQUARE ALL CORNERS
Unthreaded Mounting Hole Diameter0.281 INCHES NOMINAL IN
Left Side Flange Thickness0.250 INCHES NOMINAL IN
Flange Diameter6.500 INCHES NOMINAL IN
Body StyleEXTERNAL FLANGE
MaterialNICKEL ALLOY
Bolt Circle Diameter5.875 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
2805-00-299-0058329P INTERCHANGEABLE
Piston,internal Combustion Engin
Federal-Mogul Corp Government Sales Dept
2805-00-908-6684954P INTERCHANGEABLE
Piston,internal Combustion Engin
Federal-Mogul Corp Government Sales Dept
4920-01-155-90072552931-1 INTERCHANGEABLE
Plate,test Fixture
Honeywell International Inc Div Aerospace-South Bend (bendix Dr)
Cross-Reference Index
Part NumberManufacturer
SL5292PC31 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
255293-11 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
954P Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
SL5693PC31 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
SL5694PC31 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
954P PRIMARY Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
SL5293PC31 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
Related Parts
2805-00-299-0058INTERCHANGEABLE
PISTON,INTERNAL COMBUSTION ENGIN
329P
2805-00-908-6684INTERCHANGEABLE
PISTON,INTERNAL COMBUSTION ENGIN
954P
4920-01-155-9007INTERCHANGEABLE
PLATE,TEST FIXTURE
2552931-1

Frequently Asked Questions

What is NSN 4320-00-398-8504?

NSN 4320-00-398-8504 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 4320-00-398-8504?

NSN 4320-00-398-8504 has 7 cross-referenced part numbers: SL5292PC31 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), 255293-11 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), 954P (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), SL5693PC31 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), SL5694PC31 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging) and 2 more.

What NSN replaces 4320-00-398-8504?

There are 3 known substitutes for 4320-00-398-8504: 2805-00-299-0058, 2805-00-908-6684, 4920-01-155-9007. Verify interchangeability with system specifications before substitution.

What are the specifications of 954P?

Key specifications for 954P: Bolt Hole Quantity: 6; Counterbore Depth: 0.250 INCHES NOMINAL IN; Overall Length: 0.875 INCHES NOMINAL IN; Body Outside Diameter: 5.374 INCHES NOMINAL IN. 13 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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