The Disk,valve, cataloged under National Stock Number 1660-00-083-3601, 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 Hamilton Sundstrand Corporation Dba Collins Aerospace. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-00-083-3601 |
| Primary Part Number | 555586 |
| Item Name | Disk,valve |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| Pressure Rating | 2.0 POUNDS PER SQUARE INCH (PSI) MINIMUM AND 3.5 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Outside Diameter | 1.140 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Material Document and Classification | AMS 5643, COMP 630, 17-4PH ASSN STD SINGLE MATERIAL RESPONSE |
| Inside Diameter | 1.041 INCHES NOMINAL IN |
| Media for Which Designed | AIR |
| 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 |
|---|---|
| 555586 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
| Reference | Meaning |
|---|---|
| R-25999 | 5/1 Secondary reference Emerson Power Transmission Corporation Dba Emerson Div Emerson Power Transmission Division |
NSN 1660-00-083-3601 is a Disk,valve, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-00-083-3601 has 1 manufacturer part number on file: 555586 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
Key specifications for 555586: Overall Height: 0.092 INCHES NOMINAL IN; Pressure Rating: 2.0 POUNDS PER SQUARE INCH (PSI) MINIMUM AND 3.5 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS; Outside Diameter: 1.140 INCHES NOMINAL IN; Style Designator: PLAIN. 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 1660-00-083-3601 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.