The Parts Kit,piston Assembly,compre, cataloged under National Stock Number 4310-00-459-0781, 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 2 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-00-459-0781 |
| Primary Part Number | 2A34C |
| Item Name | Parts Kit,piston Assembly,compre |
| 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 |
| Component Quantity | 9 |
| Supply Items and Quantities | COMPRESSION RING 3; OIL RING 1; PIN,PISTON 1; RETAINING RING 2; PISTON 1; CONNECTING ROD 1 |
| 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 |
|---|---|
| 2A34 | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| 2A34C PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 3R40639 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 2A34 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| Reference | Meaning |
|---|---|
| 2A34 | 5/9 Secondary reference Ingersoll Rand Co |
| 2A34 | 5/9 Secondary reference U.S. Government activity |
| 3R40639 | 5/9 Secondary reference Ingersoll Rand Co |
| 2A34 | 5/9 Secondary reference U.S. Government activity |
| 2A34C | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 2A34C | 5/9 Secondary reference U.S. Government activity |
| 3R40639 | 5/9 Secondary reference U.S. Government activity |
| 2A34 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 3R40639 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 2A34C | 5/9 Secondary reference Ingersoll Rand Co |
NSN 4310-00-459-0781 is a Parts Kit,piston Assembly,compre, 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 4310-00-459-0781 has 4 manufacturer part numbers on file: 2A34 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 2A34C (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), 3R40639 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), 2A34 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions).
1 possible match (shared part number, not a government interchangeability claim): 5985-01-050-4513. Verify interchangeability with system specifications before substitution.
Key specifications for 2A34C: Component Quantity: 9; Supply Items and Quantities: COMPRESSION RING 3; OIL RING 1; PIN,PISTON 1; RETAINING RING 2; PISTON 1; CONNECTING ROD 1. 2 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.