The Ring,piston, cataloged under National Stock Number 4310-00-024-9384, 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 Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 20 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-00-024-9384 |
| Primary Part Number | F4378 |
| Item Name | Ring,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| Status | ACTIVE |
| Cross-Sectional Shape Style | PLAIN RECTANGULAR, STRAIGHT FACE |
| Joint Style | VERTICAL JOINT |
| Radial Wall Thickness | 0.0900 INCHES NOMINAL IN |
| Ring Style | CONCENTRIC |
| Standard Bore Diameter | 3.000 INCHES IN |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| F4378 PRIMARY | Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions (USA) |
| 801S65 PRIMARY | Bath Iron Works Corporation (USA) |
| F4378PC71 | Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions (USA) |
| Reference | Meaning |
|---|---|
| F4378PC71 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| IR30-3000-55 | 5/9 Secondary reference Ingersoll Rand Co |
| F4378 | 5/9 Secondary reference Ingersoll Rand Co |
| AGP4S4902-52PC71 | 5/9 Secondary reference U.S. Government activity |
| F4525PC71 | 5/9 Secondary reference Ingersoll Rand Co |
| X1181T3X3-16 | 5/9 Secondary reference Sci Systems Inc |
| F4378PC71 | 5/9 Secondary reference U.S. Government activity |
| F4378 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| F4378 | 5/9 Secondary reference U.S. Government activity |
| F4378 | 5/9 Secondary reference Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions |
| F4378PC71 | 5/9 Secondary reference Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions |
| AGP4S4902-52PC71 | 5/9 Secondary reference Naval Sea Systems Command |
| 801S65 | 5/9 Secondary reference Ingersoll Rand Co |
| F4517PC71 | 5/9 Secondary reference Ingersoll Rand Co |
| AGP4S4902-53PC71 | 5/9 Secondary reference U.S. Government activity |
| AGPS4902-53PC71 | 5/9 Secondary reference Naval Sea Systems Command |
| F4462APC71 | 5/9 Secondary reference Ingersoll Rand Co |
| X1181T3X3-16 | 5/9 Secondary reference Bath Iron Works Corporation |
| F4378PC71 | 5/9 Secondary reference Ingersoll Rand Co |
| X1181T3X3-16 | 5/9 Secondary reference Ingersoll Rand Co |
NSN 4310-00-024-9384 is a Ring,piston, manufactured by Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-00-024-9384 has 3 manufacturer part numbers on file: F4378 (Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions), 801S65 (Bath Iron Works Corporation), F4378PC71 (Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions).
Key specifications for F4378: Overall Width: 0.1855 INCHES MINIMUM AND 0.1865 INCHES MAXIMUM IN; Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE; Joint Style: VERTICAL JOINT; Radial Wall Thickness: 0.0900 INCHES NOMINAL IN. 6 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.