The Disk,valve, cataloged under National Stock Number 4820-00-967-4648, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Anderson Greenwood Lp Dba Anderson Greenwood Crosby. Government technical data includes 7 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 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-967-4648 |
| Primary Part Number | A1284 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| Status | ACTIVE |
| Outside Diameter | 2.160 INCHES NOMINAL IN |
| Style Designator | PLUG |
| Seat Angle | 45.0 DEGREES NOMINAL |
| Nominal Thread Size | 1.312 INCHES IN |
| Thread Class | 2B |
| Material | COPPER ALLOY |
| Thread Series Designator | UNEF |
| 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 |
|---|---|
| A1284 PRIMARY | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
NSN 4820-00-967-4648 is a Disk,valve, manufactured by Anderson Greenwood Lp Dba Anderson Greenwood Crosby, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-967-4648 has 1 manufacturer part number on file: A1284 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby).
2 possible matches (shared part number, not a government interchangeability claim): 5961-00-975-1196, 5305-01-349-2846. Verify interchangeability with system specifications before substitution.
Key specifications for A1284: Overall Height: 2.893 INCHES NOMINAL IN; Outside Diameter: 2.160 INCHES NOMINAL IN; Style Designator: PLUG; Seat Angle: 45.0 DEGREES NOMINAL. 7 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.