The Disk,valve, cataloged under National Stock Number 4820-01-218-3720, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Honeywell Inc Commercial Div. Government technical data includes 5 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-218-3720 |
| Primary Part Number | A16645 PIECE 3 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Honeywell Inc Commercial Div |
| Status | ACTIVE |
| Shank Diameter | 2.861 INCHES NOMINAL IN |
| Flange Diameter | 2.188 INCHES NOMINAL IN |
| Style Designator | POPPET |
| Media for Which Designed | AIR |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| A16645 PIECE 3 PRIMARY | Honeywell Inc Commercial Div (USA) |
| Reference | Meaning |
|---|---|
| S4824H3102154 PIECE 3 | 5/2 Secondary reference U.S. Government activity |
| A16645 | 5/9 Secondary reference U.S. Government activity |
| S4824H3102154 | D/9 Drawing number reference only U.S. Government activity |
NSN 4820-01-218-3720 is a Disk,valve, manufactured by Honeywell Inc Commercial Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-218-3720 has 1 manufacturer part number on file: A16645 PIECE 3 (Honeywell Inc Commercial Div).
Key specifications for A16645 PIECE 3: Shank Diameter: 2.861 INCHES NOMINAL IN; Flange Diameter: 2.188 INCHES NOMINAL IN; Overall Height: 1.375 INCHES NOMINAL IN; Style Designator: POPPET. 5 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.