The Valve,safety Relief, cataloged under National Stock Number 4820-01-446-6388, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is L3harris Technologies Integrated Systems L.p. Div Integrated Aerospace Systems. Government technical data includes 16 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-446-6388 |
| Primary Part Number | BH000026-002 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | L3harris Technologies Integrated Systems L.p. Div Integrated Aerospace Systems |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-A-8625, TYPE II, CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE LOCATION NOT OTHERWISE SPECIFIED |
| Connection Style | GASKET SEAL(BOSS) FIRST END |
| Minimum Operating Temp | -65.0 FAHRENHEIT DEGF |
| Connection Type | THREADED INTERNAL BOSS FIRST END |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.438 INCHES FIRST END IN |
| Maximum Operating Temp | 250.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Surface Treatment | ANODIZE LOCATION NOT OTHERWISE SPECIFIED |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Thread Class | 3B FIRST END |
| Material | ALUMINUM ALLOY 2024 BODY |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END |
| Opening Pressure Setting | 22.5 POUNDS PER SQUARE INCH LBS |
| Valve Operation Method | AUTOMATIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| BH000026-002 | L3harris Technologies Integrated Systems L.p. Div Integrated Aerospace Systems (USA) |
| Reference | Meaning |
|---|---|
| BH000026 | 7/2 Vendor item drawing reference L3harris Technologies Integrated Systems L.p. Div Integrated Aerospace Systems |
| 2391244-14-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-446-6388 is a Valve,safety Relief, manufactured by L3harris Technologies Integrated Systems L.p. Div Integrated Aerospace Systems, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-446-6388 has 1 manufacturer part number on file: BH000026-002 (L3harris Technologies Integrated Systems L.p. Div Integrated Aerospace Systems).
Key specifications for BH000026-002: Surface Treatment Document and Classification: MIL-A-8625, TYPE II, CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE LOCATION NOT OTHERWISE SPECIFIED; Connection Style: GASKET SEAL(BOSS) FIRST END; Minimum Operating Temp: -65.0 FAHRENHEIT DEGF; Connection Type: THREADED INTERNAL BOSS FIRST END. 16 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.
NSN 4820-01-446-6388 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.