The Cap,air Regulator, cataloged under National Stock Number 4820-00-497-1690, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-497-1690 |
| Item Name | Cap,air Regulator |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| General Characteristics Item Description | BRASS,PASSIVATED CHROMATE DIP,3/4 IN. HEX. WITH 1/8 IN. CROSS SLOTS FOR ADJUSTMENT IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| A34Z94 | 5/9 Secondary reference Union Carbide Corp Sub of Dow Co the |
| 4051 | 5/9 Secondary reference Union Carbide Corp Sub of Dow Co the |
| A34Z94 | 3/2 Design control — primary reference U.S. Government activity |
| A34Z94 | 3/9 Design control — primary reference L-Tec Welding and Cutting Systems |
NSN 4820-00-497-1690 is a Cap,air Regulator, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-00-497-1690: General Characteristics Item Description: BRASS,PASSIVATED CHROMATE DIP,3/4 IN. HEX. WITH 1/8 IN. CROSS SLOTS FOR ADJUSTMENT 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.