The Regulator,oxygen, cataloged under National Stock Number 4820-00-418-0099, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Smith Equipment Mfg Co Llc. 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-418-0099 |
| Primary Part Number | 30-20-540 |
| Item Name | Regulator,oxygen |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Smith Equipment Mfg Co Llc |
| Status | ACTIVE |
| General Characteristics Item Description | INLET PRESSURE GAGE 2.000 IN. W/4000 LB SCALE,OUTLET PRESSURE GAGE 2.000 IN. W/30 LB SCALE LBS |
| 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 |
|---|---|
| 30-20-540 PRIMARY | Smith Equipment Mfg Co Llc (USA) |
| Reference | Meaning |
|---|---|
| H743 | 5/9 Secondary reference Tescom Corp Dba Tescom Div Tescom |
| H1940G-540 | 5/9 Secondary reference Smith Equipment Mfg Co Llc |
| H1940C-540 | 5/9 Secondary reference Smith Equipment Mfg Co Llc |
| H1940-540 | 5/9 Secondary reference Tescom Corp Dba Tescom Div Tescom |
| H1940A-540 | 5/9 Secondary reference Tescom Corp Dba Tescom Div Tescom |
| H1740-540 | 5/9 Secondary reference Tescom Corp Dba Tescom Div Tescom |
| H1940D-540 | 5/9 Secondary reference Smith Equipment Mfg Co Llc |
| H1940B-540 | 5/9 Secondary reference Smith Equipment Mfg Co Llc |
NSN 4820-00-418-0099 is a Regulator,oxygen, manufactured by Smith Equipment Mfg Co Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-418-0099 has 1 manufacturer part number on file: 30-20-540 (Smith Equipment Mfg Co Llc).
2 possible matches (shared part number, not a government interchangeability claim): 6615-00-938-2309, 3433-01-625-9222. Verify interchangeability with system specifications before substitution.
Key specifications for 30-20-540: General Characteristics Item Description: INLET PRESSURE GAGE 2.000 IN. W/4000 LB SCALE,OUTLET PRESSURE GAGE 2.000 IN. W/30 LB SCALE LBS. 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.