The Pneumatic Muffler,exhaust-Intake, cataloged under National Stock Number 4310-01-720-6991, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is W.w. Grainger, Inc. Div Government Sales Division. Government technical data includes 9 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-01-720-6991 |
| Primary Part Number | 1EJW6 |
| Item Name | Pneumatic Muffler,exhaust-Intake |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | W.w. Grainger, Inc. Div Government Sales Division |
| Status | ACTIVE |
| Inlet Location | BOTTOM |
| Coolant Type | AIR |
| Inlet Connection Quantity | 1 |
| Inlet Thread Location | EXTERNAL SINGLE INLET |
| Inlet Connection Type | THREADED SINGLE INLET |
| Thread Direction | RIGHT-HAND SINGLE INLET |
| Body Shape | ROUND |
| Inlet Thread Series Designator | NPT SINGLE INLET |
| Material | ALUMINUM 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 |
|---|---|
| 1EJW6 PRIMARY | W.w. Grainger, Inc. Div Government Sales Division (USA) |
NSN 4310-01-720-6991 is a Pneumatic Muffler,exhaust-Intake, manufactured by W.w. Grainger, Inc. Div Government Sales Division, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-01-720-6991 has 1 manufacturer part number on file: 1EJW6 (W.w. Grainger, Inc. Div Government Sales Division).
Key specifications for 1EJW6: Inlet Location: BOTTOM; Coolant Type: AIR; Inlet Connection Quantity: 1; Inlet Thread Location: EXTERNAL SINGLE INLET. 9 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.