The Pneumatic Muffler,exhaust-Intake, cataloged under National Stock Number 4330-01-374-0198, 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 Nelson Industries Inc Universal Silencer Div. Government technical data includes 22 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4330-01-374-0198 |
| Primary Part Number | CCS-1 |
| Item Name | Pneumatic Muffler,exhaust-Intake |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Nelson Industries Inc Universal Silencer Div |
| Status | ACTIVE |
| Operating Position | VERTICAL |
| Outlet Connection Quantity | 1 |
| Inlet Location | CENTRALLY LOCATED ON BOTTOM |
| Design Type | JACKETED |
| Overall Diameter | 7.750 INCHES NOMINAL IN |
| Inlet Connection Quantity | 1 |
| Inlet Thread Location | INTERNAL LOCATION NOT OTHERWISE SPECIFIED |
| Inlet Projection Length | 0.500 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Supplementary Features | EXHAUST/OUTLET FILTER SILENCER USED ON SMALL BLOWERS,COMPRESSORS AND ENGINES |
| Baffle Quantity | 1 |
| Muffler Design | STRAIGHT THROUGH W/BAFFLE |
| Outlet Flange Shape | ROUND LOCATION NOT OTHERWISE SPECIFIED |
| Inlet Connection Type | THREADED LOCATION NOT OTHERWISE SPECIFIED |
| Thread Direction | RIGHT-HAND INLET |
| Body Shape | ROUND |
| Inlet Thread Size | 1-11-1/2 LOCATION NOT OTHERWISE SPECIFIED |
| Inlet Thread Series Designator | NPT LOCATION NOT OTHERWISE SPECIFIED |
| Surface Treatment | ENAMEL LUSTERLESS |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Outlet Projection Length | 0.875 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Furnished Items and Quantity | REPLACEABLE ELEMENT |
| Outlet Location | ALL AROUND PERIMETER OF BODY UNDER CAP |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4330-01-374-0198 is a Pneumatic Muffler,exhaust-Intake, manufactured by Nelson Industries Inc Universal Silencer Div, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-374-0198 has 2 manufacturer part numbers on file: 34-201-AA (Nelson Industries Inc Universal Silencer Div), CCS-1 (Nelson Industries Inc Universal Silencer Div).
Key specifications for CCS-1: Operating Position: VERTICAL; Outlet Connection Quantity: 1; Inlet Location: CENTRALLY LOCATED ON BOTTOM; Design Type: JACKETED. 22 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.