The Pneumatic Muffler,exhaust-Intake, cataloged under National Stock Number 4330-01-236-1297, is classified within Federal Supply Class 4330 (Centrifugals, Separators, and Pressure and Vacuum Filters) of the Pumps and Compressors group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4330-01-236-1297 |
| Item Name | Pneumatic Muffler,exhaust-Intake |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Status | ACTIVE |
| Operating Position | HORIZONTAL |
| Inlet Outside Diameter | 6.000 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Inlet Location | CENTRALLY LOCATED IN END SECTION OF BODY ON EDGE |
| Overall Diameter | 10.250 INCHES NOMINAL IN |
| Inlet Projection Length | 3.000 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Outlet Outside Diameter | 6.000 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Inlet Connection Type | UNTHREADED LOCATION NOT OTHERWISE SPECIFIED |
| Body Shape | ROUND |
| Material | COPPER ALLOY 706 LOCATION NOT OTHERWISE SPECIFIED |
| Outlet Projection Length | 3.000 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Outlet Connection Type | UNTHREADED LOCATION NOT OTHERWISE SPECIFIED |
| Outlet Location | CENTRALLY LOCATED IN END SECTION OF BODY ON EDGE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| M0-6 | 3/9 Design control — primary reference Beaird Industries Inc. |
NSN 4330-01-236-1297 is a Pneumatic Muffler,exhaust-Intake, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5120-01-328-7813, 5835-01-416-5761. Verify interchangeability with system specifications before substitution.
Key specifications for 4330-01-236-1297: Operating Position: HORIZONTAL; Inlet Outside Diameter: 6.000 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN; Inlet Location: CENTRALLY LOCATED IN END SECTION OF BODY ON EDGE; Overall Diameter: 10.250 INCHES NOMINAL IN. 12 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.