The Pneumatic Muffler,exhaust-Intake, cataloged under National Stock Number 4310-01-431-6658, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Control Devices, Incorporated. Government technical data includes 14 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 | 4310-01-431-6658 |
| Primary Part Number | M20053-1 |
| Item Name | Pneumatic Muffler,exhaust-Intake |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Control Devices, Incorporated |
| Status | ACTIVE |
| Inlet Location | ON END SECTION OF BODY |
| Coolant Type | AIR |
| Design Type | DRY |
| Overall Diameter | 0.6875 INCHES NOMINAL IN |
| Inlet Connection Quantity | 1 |
| Inlet Thread Location | EXTERNAL LOCATION NOT OTHERWISE SPECIFIED |
| Inlet Projection Length | 1.500 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Muffler Design | STRAIGHT THROUGH |
| Inlet Connection Type | THREADED LOCATION NOT OTHERWISE SPECIFIED |
| Thread Direction | RIGHT-HAND INLET |
| Body Shape | ROUND |
| Inlet Thread Size | 3/8-18 SINGLE INLET |
| Inlet Thread Series Designator | NPT LOCATION NOT OTHERWISE SPECIFIED |
| Material | COPPER 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 |
|---|---|
| M20053-1 PRIMARY | Control Devices, Incorporated (USA) |
NSN 4310-01-431-6658 is a Pneumatic Muffler,exhaust-Intake, manufactured by Control Devices, Incorporated, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-01-431-6658 has 1 manufacturer part number on file: M20053-1 (Control Devices, Incorporated).
Key specifications for M20053-1: Inlet Location: ON END SECTION OF BODY; Coolant Type: AIR; Design Type: DRY; Overall Diameter: 0.6875 INCHES NOMINAL IN. 14 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.