The Pneumatic Muffler,exhaust-Intake, cataloged under National Stock Number 4310-01-290-9290, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Atlas Copco Holyoke Inc. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4310-01-290-9290 |
| Primary Part Number | MUF00307 |
| Item Name | Pneumatic Muffler,exhaust-Intake |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Atlas Copco Holyoke Inc |
| Status | ACTIVE |
| Inlet Flange Shape | ROUND LOCATION NOT OTHERWISE SPECIFIED |
| Operating Position | HORIZONTAL |
| Inlet Location | CENTRALLY LOCATED AT BOTTOM |
| Coolant Type | AIR |
| Design Type | DRY |
| Material Document and Classification | AISI 347 ASSN STD 1ST MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED |
| Muffler Design | DIRECTIONAL VANE |
| Inlet Connection Type | FLANGE LOCATION NOT OTHERWISE SPECIFIED |
| Body Shape | ROUND |
| Material | STEEL COMP 347 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 |
|---|---|
| MUF00307 PRIMARY | Atlas Copco Holyoke Inc (USA) |
| Reference | Meaning |
|---|---|
| MUF307 | 5/9 Secondary reference U.S. Government activity |
| MUF-307 | 5/9 Secondary reference Atlas Copco Holyoke Inc |
NSN 4310-01-290-9290 is a Pneumatic Muffler,exhaust-Intake, manufactured by Atlas Copco Holyoke Inc, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-01-290-9290 has 1 manufacturer part number on file: MUF00307 (Atlas Copco Holyoke Inc).
Key specifications for MUF00307: Inlet Flange Shape: ROUND LOCATION NOT OTHERWISE SPECIFIED; Operating Position: HORIZONTAL; Inlet Location: CENTRALLY LOCATED AT BOTTOM; Coolant Type: AIR. 10 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.