The Valve,safety Relief, cataloged under National Stock Number 4820-01-263-0180, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Honeywell International Inc. Dba Honeywell International. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-263-0180 |
| Primary Part Number | 109840-1-1 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Honeywell International Inc. Dba Honeywell International |
| 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 |
|---|---|
| 109840-1-1 PRIMARY | Honeywell International Inc. Dba Honeywell International (USA) |
| 109840-1-1 PRIMARY | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) (USA) |
| Reference | Meaning |
|---|---|
| 10159535 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 109840-1-1 | 5/9 Secondary reference U.S. Government activity |
| 109840-1-1 | 5/9 Secondary reference Armstrong Tool Inc |
NSN 4820-01-263-0180 is a Valve,safety Relief, manufactured by Honeywell International Inc. Dba Honeywell International, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-263-0180 has 2 manufacturer part numbers on file: 109840-1-1 (Honeywell International Inc. Dba Honeywell International), 109840-1-1 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)).
Key specifications for 109840-1-1: End Item Identification: AIRCRAFT MODEL F-18. 0 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.