The Pneumatic Muffler,exhaust-Intake, cataloged under National Stock Number 4330-01-251-4598, 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 Parker-Hannifin Corporation Dba Pneutronics Div Pneumatic Division. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4330-01-251-4598 |
| Primary Part Number | ES-37MB |
| Item Name | Pneumatic Muffler,exhaust-Intake |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Pneumatic Division |
| Status | ACTIVE |
| Operating Position | HORIZONTAL |
| Overall Diameter | 1.250 INCHES NOMINAL IN |
| Muffler Design | STRAIGHT THROUGH |
| Body Shape | ROUND |
| Material | ALUMINUM 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 |
|---|---|
| ES-37MB PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Pneumatic Division (USA) |
| Reference | Meaning |
|---|---|
| ES-37M | 5/9 Secondary reference Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters |
| ST60D41 | 5/9 Secondary reference Lockheed Martin Corp |
NSN 4330-01-251-4598 is a Pneumatic Muffler,exhaust-Intake, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Pneumatic Division, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-251-4598 has 1 manufacturer part number on file: ES-37MB (Parker-Hannifin Corporation Dba Pneutronics Div Pneumatic Division).
Key specifications for ES-37MB: Operating Position: HORIZONTAL; Overall Diameter: 1.250 INCHES NOMINAL IN; Overall Length: 3.469 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.