The Cylinder,renewal Unit, cataloged under National Stock Number 4820-01-177-3951, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Ross Controls Incorporated. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-177-3951 |
| Primary Part Number | 195-09-4-03841-00 |
| Item Name | Cylinder,renewal Unit |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Ross Controls Incorporated |
| Status | ACTIVE |
| General Characteristics Item Description | COMPOSITION SEAT,BRONZE,250 PSI,TEMPERATUR 200 MAX.,0.312 IN., IN |
| 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 |
|---|---|
| 195-09-4-03841-00 | Ross Controls Incorporated (USA) |
| Reference | Meaning |
|---|---|
| 195-09-4-03841-00 | 3/2 Design control — primary reference U.S. Government activity |
| 195-3841 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-177-3951 is a Cylinder,renewal Unit, manufactured by Ross Controls Incorporated, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-177-3951 has 1 manufacturer part number on file: 195-09-4-03841-00 (Ross Controls Incorporated).
Key specifications for 195-09-4-03841-00: General Characteristics Item Description: COMPOSITION SEAT,BRONZE,250 PSI,TEMPERATUR 200 MAX.,0.312 IN., IN. 1 specification is 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.