The Disk,valve, cataloged under National Stock Number 1660-01-250-0033, 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 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 9 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-250-0033 |
| Primary Part Number | 2074555 |
| Item Name | Disk,valve |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Shank Diameter | 0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN |
| Flange Seat to Disk End Height | 0.876 INCHES NOMINAL IN |
| Outside Diameter | 0.988 INCHES MINIMUM AND 0.992 INCHES MAXIMUM IN |
| Style Designator | POPPET |
| Material Document and Classification | AISI 303 ASSN STD SINGLE MATERIAL RESPONSE |
| Seat Angle | 20.0 DEGREES NOMINAL |
| Specification/standard Data | 10001-2074555 GOVERNMENT STANDARD |
| Inside Diameter | 0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN |
| Material | STEEL COMP 303 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2074555 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 1660-01-250-0033 is a Disk,valve, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-250-0033 has 1 manufacturer part number on file: 2074555 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 2074555: Shank Diameter: 0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN; Flange Seat to Disk End Height: 0.876 INCHES NOMINAL IN; Overall Height: 1.027 INCHES MINIMUM AND 1.037 INCHES MAXIMUM IN; Outside Diameter: 0.988 INCHES MINIMUM AND 0.992 INCHES MAXIMUM IN. 9 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 1660-01-250-0033 has DEMIL Code B. 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.