The Disk,valve, cataloged under National Stock Number 1660-00-784-5088, is classified within Federal Supply Class 1660 (Aircraft Air Conditioning, Heating, and Pressurizing Equipment) of the Aircraft Components and Accessories group. The manufacturer of record is Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road). 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 1660-00-784-5088 |
| Primary Part Number | 859763-1 |
| Item Name | Disk,valve |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) |
| Status | ACTIVE |
| Shank Diameter | 0.312 INCHES MINIMUM IN |
| Flange Diameter | 0.405 INCHES NOMINAL IN |
| Style Designator | POPPET |
| Material Document and Classification | AMS 5643, COMP 630, 17-4PH ASSN STD SINGLE MATERIAL RESPONSE |
| Seat Angle | 75.0 DEGREES MINIMUM AND 85.0 DEGREES MAXIMUM |
| Media for Which Designed | LIQUID |
| Material | STEEL COMP 630 |
| 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 |
|---|---|
| 859763-1 PRIMARY | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) (USA) |
| Reference | Meaning |
|---|---|
| 859763-1 | 5/9 Secondary reference U.S. Government activity |
NSN 1660-00-784-5088 is a Disk,valve, manufactured by Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road), classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-00-784-5088 has 1 manufacturer part number on file: 859763-1 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)).
1 possible match (shared part number, not a government interchangeability claim): 5935-01-272-1402. Verify interchangeability with system specifications before substitution.
Key specifications for 859763-1: Shank Diameter: 0.312 INCHES MINIMUM IN; Flange Diameter: 0.405 INCHES NOMINAL IN; Overall Height: 1.315 INCHES MINIMUM AND 1.335 INCHES MAXIMUM IN; Style Designator: POPPET. 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.
NSN 1660-00-784-5088 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.