The Pneumatic Muffler,exhaust-Intake, cataloged under National Stock Number 4330-01-240-2838, is classified within Federal Supply Class 4330 (Centrifugals, Separators, and Pressure and Vacuum Filters) of the Pumps and Compressors group. The manufacturer of record is Salisbury W H and Co Inc. Government technical data includes 5 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. 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 | 4330-01-240-2838 |
| Primary Part Number | M-375 |
| Item Name | Pneumatic Muffler,exhaust-Intake |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Salisbury W H and Co Inc |
| Status | ACTIVE |
| Operating Position | HORIZONTAL |
| Overall Diameter | 8.500 INCHES NOMINAL IN |
| Muffler Design | STRAIGHT THROUGH |
| Body Shape | ROUND |
| Material | PLASTIC 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 |
|---|---|
| M-375 PRIMARY | Salisbury W H and Co Inc (USA) |
NSN 4330-01-240-2838 is a Pneumatic Muffler,exhaust-Intake, manufactured by Salisbury W H and Co Inc, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-240-2838 has 1 manufacturer part number on file: M-375 (Salisbury W H and Co Inc).
1 possible match (shared part number, not a government interchangeability claim): 5950-01-330-6489. Verify interchangeability with system specifications before substitution.
Key specifications for M-375: Operating Position: HORIZONTAL; Overall Diameter: 8.500 INCHES NOMINAL IN; Overall Length: 28.500 INCHES NOMINAL IN; Muffler Design: STRAIGHT THROUGH. 5 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.