The Pneumatic Muffler,exhaust-Intake, cataloged under National Stock Number 4330-01-339-1107, 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 Electro Mechanical Specialists, Llc. Government technical data includes 6 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4330-01-339-1107 |
| Primary Part Number | 265371301 ATC |
| Item Name | Pneumatic Muffler,exhaust-Intake |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Electro Mechanical Specialists, Llc |
| Status | ACTIVE |
| Outlet Connection Quantity | 1 |
| Design Type | DRY |
| Inlet Connection Quantity | 1 |
| Material Document and Classification | QQ-A-250/8, O FED SPEC 1ST MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED |
| Muffler Design | STRAIGHT THROUGH |
| Material | ALUMINUM ALLOY 5052 LOCATION NOT OTHERWISE SPECIFIED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 265371301 ATC | Electro Mechanical Specialists, Llc (USA) |
| Reference | Meaning |
|---|---|
| 19-80-4913 | 5/9 Secondary reference U.S. Government activity |
| 265371301 ATC | 5/9 Secondary reference Hansome Energy Systems Inc |
| 19-80-4913 | 3/9 Design control — primary reference U.S. Government activity |
| DA100535 | D/9 Drawing number reference only U.S. Government activity |
NSN 4330-01-339-1107 is a Pneumatic Muffler,exhaust-Intake, manufactured by Electro Mechanical Specialists, Llc, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-339-1107 has 1 manufacturer part number on file: 265371301 ATC (Electro Mechanical Specialists, Llc).
Key specifications for 265371301 ATC: Outlet Connection Quantity: 1; Design Type: DRY; Inlet Connection Quantity: 1; Material Document and Classification: QQ-A-250/8, O FED SPEC 1ST MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED. 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.
NSN 4330-01-339-1107 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.