The Pneumatic Muffler,exhaust-Intake, cataloged under National Stock Number 4310-01-370-0427, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-01-370-0427 |
| Primary Part Number | 5947501 |
| Item Name | Pneumatic Muffler,exhaust-Intake |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Inlet Outside Diameter | 2.240 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Inlet Location | LOCATED ON THE SMALLER DIA END |
| Coolant Type | AIR |
| Inlet Connection Quantity | 1 |
| Inlet Projection Length | 5.5625 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Baffle Quantity | 1 |
| Muffler Design | BAFFLE |
| Inlet Connection Type | UNTHREADED LOCATION NOT OTHERWISE SPECIFIED |
| Body Shape | TAPERED |
| Inlet Inside Diameter | 2.000 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Material | COPPER AND COPPER ALLOY LOCATION NOT OTHERWISE SPECIFIED |
| 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 |
|---|---|
| 571-6670330 PIECE 1 | Naval Sea Systems Command (USA) |
| 5947501 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6166435 PART 1 | 5/9 Secondary reference Naval Sea Systems Command |
| 6243057 PART 1 | 5/9 Secondary reference Naval Sea Systems Command |
NSN 4310-01-370-0427 is a Pneumatic Muffler,exhaust-Intake, manufactured by Naval Sea Systems Command, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-01-370-0427 has 2 manufacturer part numbers on file: 571-6670330 PIECE 1 (Naval Sea Systems Command), 5947501 (Naval Sea Systems Command).
3 possible matches (shared part number, not a government interchangeability claim): 4730-01-423-3597, 4730-01-423-3598, 4730-01-449-6255. Verify interchangeability with system specifications before substitution.
Key specifications for 5947501: Overall Height: 8.602 INCHES NOMINAL IN; Inlet Outside Diameter: 2.240 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN; Inlet Location: LOCATED ON THE SMALLER DIA END; Coolant Type: AIR. 11 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.