The Valve,butterfly, cataloged under National Stock Number 4820-00-356-1040, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road). Government technical data includes 20 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-356-1040 |
| Primary Part Number | 123796-1-1 |
| Item Name | Valve,butterfly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) |
| Status | ACTIVE |
| Flange Shape | ROUND SECOND END |
| Flange Face Design | RAISED STRAIGHT SECOND END |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE |
| Connection Style | PLAIN (TUBE) FIRST END |
| Connection Type | FLANGE SECOND END |
| Connection Type | UNTHREADED EXTERNAL TUBE FIRST END |
| Style Designator | STRAIGHT THRU |
| Nominal Outside Diameter Tube Accommodated | 5.875 INCHES FIRST END IN |
| Operating Pressure | 10.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 160.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Nominal Outside Diameter | 5.995 INCHES SECOND END IN |
| Surface Treatment | ANODIZE |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Material | ALUMINUM SEAT |
| Material | ALUMINUM BODY |
| Material | STEEL CORROSION RESISTING STEM |
| Raised Face Nominal Diameter | 5.892 INCHES SECOND END IN |
| Valve Operation Method | AUTOMATIC |
| Raised Face Nominal Height | 0.030 INCHES SECOND END IN |
| Nominal Thickness | 0.060 INCHES SECOND END IN |
| 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 |
|---|---|
| CYLB51063 | Ge Aviation Systems Llc Dba Ge Aviation Systems Llc (USA) |
| 123796-1-1 PRIMARY | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) (USA) |
| Reference | Meaning |
|---|---|
| 672962-101 | 3/2 Design control — primary reference U.S. Government activity |
| 123796-1-1 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-00-356-1040 is a Valve,butterfly, manufactured by Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road), classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-356-1040 has 2 manufacturer part numbers on file: CYLB51063 (Ge Aviation Systems Llc Dba Ge Aviation Systems Llc), 123796-1-1 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-522-1983. Verify interchangeability with system specifications before substitution.
Key specifications for 123796-1-1: Flange Shape: ROUND SECOND END; Flange Face Design: RAISED STRAIGHT SECOND END; Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE; Connection Style: PLAIN (TUBE) FIRST END. 20 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 4820-00-356-1040 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.