The Piston,compressor, cataloged under National Stock Number 4310-01-237-0442, 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 Div Epd. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Piston,compressor |
| FSC / FSG | 4310 — Compressors and Vacuum Pumps (FSG 43) |
| Manufacturers | Curtiss-Wright Electro-Mechanical Corporation Div Epd (CAGE 0UBG9) |
| Parameter | Value |
|---|---|
| NSN | 4310-01-237-0442 |
| Primary Part Number | HL-19392 U1C |
| Item Name | Piston,compressor |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| Status | ACTIVE |
| 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 |
|---|---|
| HL-19392 U1C PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| Reference | Meaning |
|---|---|
| 2100N | 5/9 Secondary reference U.S. Government activity |
| HL-19392 | D/9 Drawing number reference only U.S. Government activity |
| HL-19392 PIECE 78 | 5/9 Secondary reference U.S. Government activity |
| HL-19392 U1C | 3/9 Design control — primary reference U.S. Government activity |
NSN 4310-01-237-0442 is a Piston,compressor, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-01-237-0442 has 1 manufacturer part number on file: HL-19392 U1C (Curtiss-Wright Electro-Mechanical Corporation Div Epd).
2 possible matches (shared part number, not a government interchangeability claim): 4310-01-238-0217, 5340-01-238-0297. Verify interchangeability with system specifications before substitution.
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.