PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

204BRing,shell

Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions · NSN 4310-00-398-9122 · FSC 4310 · No Item Name Available
Verified by PartsTable
NSN 4310-00-398-9122 — this item is cataloged by the U.S. Government under National Stock Number 4310-00-398-9122. Primary manufacturer part number: 204B.
Features
  • Ring,shell — FSC 4310
  • General Characteristics Item Description: BRASS MATERIAL;5.188 IN. O/A DIA,0.640 IN. O/A THK,2.875 IN. ID,0.128 IN. FLANGE THICKNESS,FLANGE IS LOCATED 0.132 IN. FROM TOP OF ITEM,RING IS SPLIT IN TWO PIECES IN
  • 4 verified cross-references
  • Primary manufacturer: Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions
Applications
  • Hydraulic and pneumatic systems
  • Industrial process pumping
  • Military vehicle hydraulics
General Description

The Ring,shell, cataloged under National Stock Number 4310-00-398-9122, is classified within Federal Supply Class 4310 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 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
NSN4310-00-398-9122
Primary Part Number204B
Item NameRing,shell
FSC / FSG4310 / 43 — No Item Name Available
ManufacturerCurtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions
StatusACTIVE
General Characteristics Item DescriptionBRASS MATERIAL;5.188 IN. O/A DIA,0.640 IN. O/A THK,2.875 IN. ID,0.128 IN. FLANGE THICKNESS,FLANGE IS LOCATED 0.132 IN. FROM TOP OF ITEM,RING IS SPLIT IN TWO PIECES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
6220-00-374-2072432-00-122 INTERCHANGEABLE
Stop Light-Taillight,vehicular
Arrow Safety Device Co
5930-01-414-9855 INTERCHANGEABLE
Switch,rotary
5985-01-438-6682 INTERCHANGEABLE
Base,antenna Support
Cross-Reference Index
Part NumberManufacturer
204B Dresser-Rand Co Worthington Compressor Opn a Joint Venture (USA)
204B PRIMARY Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA)
111209PC38 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
204B Siemens Energy, Inc. Dba Dresser-Rand (USA)
Related Parts
6220-00-374-2072INTERCHANGEABLE
STOP LIGHT-TAILLIGHT,VEHICULAR
432-00-122
5930-01-414-9855INTERCHANGEABLE
SWITCH,ROTARY
5985-01-438-6682INTERCHANGEABLE
BASE,ANTENNA SUPPORT

Frequently Asked Questions

What is NSN 4310-00-398-9122?

NSN 4310-00-398-9122 is a Ring,shell, manufactured by Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions, classified under FSC 4310 (No Item Name Available). Status: active.

What are the part numbers for NSN 4310-00-398-9122?

NSN 4310-00-398-9122 has 4 cross-referenced part numbers: 204B (Dresser-Rand Co Worthington Compressor Opn a Joint Venture), 204B (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), 111209PC38 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), 204B (Siemens Energy, Inc. Dba Dresser-Rand).

What NSN replaces 4310-00-398-9122?

There are 3 known substitutes for 4310-00-398-9122: 6220-00-374-2072, 5930-01-414-9855, 5985-01-438-6682. Verify interchangeability with system specifications before substitution.

What are the specifications of 204B?

Key specifications for 204B: General Characteristics Item Description: BRASS MATERIAL;5.188 IN. O/A DIA,0.640 IN. O/A THK,2.875 IN. ID,0.128 IN. FLANGE THICKNESS,FLANGE IS LOCATED 0.132 IN. FROM TOP OF ITEM,RING IS SPLIT IN TWO PIECES IN. 1 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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