The Piston,compressor, cataloged under National Stock Number 4310-00-339-4055, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The 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 16 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-00-339-4055 |
| Primary Part Number | 2238B1 |
| Item Name | Piston,compressor |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions |
| Status | ACTIVE |
| Ring Groove Width | 0.185 INCHES NOMINAL AND 0.125 INCHES NOMINAL IN |
| Integral Connecting Rod | NOT INCLUDED |
| Retaining Ring Groove | NOT INCLUDED |
| Surface Finish | FINISHED |
| Diameter | 1.475 INCHES NOMINAL IN |
| Ring Groove Diameter | 0.880 INCHES NOMINAL AND 1.108 INCHES NOMINAL IN |
| Pin | NOT INCLUDED |
| Oil Groove | NOT INCLUDED |
| Head Style | FLAT |
| Ring Groove Quantity | 2 |
| Skirt Bottom Cutaway Feature | NOT INCLUDED |
| Finished Size Designation | STANDARD |
| Ring | NOT INCLUDED |
| Pin Hole Bushing | NOT INCLUDED |
| Material | COPPER ALLOY |
| Skirt Type | SOLID |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2238B1 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| Reference | Meaning |
|---|---|
| 2238B1 | 3/9 Design control — primary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 2238B1 | 5/9 Secondary reference Ingersoll Rand Co |
| 2238B1 | 5/9 Secondary reference U.S. Government activity |
NSN 4310-00-339-4055 is a Piston,compressor, manufactured by Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-00-339-4055 has 1 manufacturer part number on file: 2238B1 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions).
Key specifications for 2238B1: Overall Height: 4.625 INCHES NOMINAL IN; Ring Groove Width: 0.185 INCHES NOMINAL AND 0.125 INCHES NOMINAL IN; Integral Connecting Rod: NOT INCLUDED; Retaining Ring Groove: NOT INCLUDED. 16 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.