The Regulator,nitrogen, cataloged under National Stock Number 4820-01-702-7539, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Lincoln Electric Co the Harris Calorific Div. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Item Name | Regulator,nitrogen |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Lincoln Electric Co the Harris Calorific Div (CAGE 27372) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-702-7539 |
| Primary Part Number | 3301256 |
| Item Name | Regulator,nitrogen |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Lincoln Electric Co the Harris Calorific Div |
| Status | ACTIVE |
| 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 |
|---|---|
| 3301256 PRIMARY | Lincoln Electric Co the Harris Calorific Div (USA) |
| 402015580C | Lincoln Electric Co the Harris Calorific Div (USA) |
| Reference | Meaning |
|---|---|
| 8598671 | D/9 Drawing number reference only Naval Sea Systems Command |
| 8598671 ITEM 8 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 4820-01-702-7539 is a Regulator,nitrogen, manufactured by Lincoln Electric Co the Harris Calorific Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-702-7539 has 2 manufacturer part numbers on file: 3301256 (Lincoln Electric Co the Harris Calorific Div), 402015580C (Lincoln Electric Co the Harris Calorific Div).
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.