The Disk,valve, cataloged under National Stock Number 4820-01-413-3658, 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 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-413-3658 |
| Primary Part Number | 974743-4 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) |
| Status | ACTIVE |
| Shank Diameter | 0.124 INCHES NOMINAL IN |
| Flange Diameter | 0.175 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN |
| Style Designator | POPPET |
| Material Document and Classification | AMS 5643, COMP 630, 17-4PH ASSN STD SINGLE MATERIAL RESPONSE |
| Seat Angle | 44.0 DEGREES MINIMUM AND 46.0 DEGREES MAXIMUM |
| Material | STEEL COMP 630 |
| 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 |
|---|---|
| 974743-4 PRIMARY | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) (USA) |
| Reference | Meaning |
|---|---|
| 974743 | D/9 Drawing number reference only Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) |
NSN 4820-01-413-3658 is a Disk,valve, manufactured by Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road), classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-413-3658 has 1 manufacturer part number on file: 974743-4 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)).
1 possible match (shared part number, not a government interchangeability claim): 1680-01-547-7894. Verify interchangeability with system specifications before substitution.
Key specifications for 974743-4: Shank Diameter: 0.124 INCHES NOMINAL IN; Flange Diameter: 0.175 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN; Overall Height: 1.448 INCHES MINIMUM AND 1.468 INCHES MAXIMUM IN; Style Designator: POPPET. 6 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.