The Housing Assembly,gear,valve, cataloged under National Stock Number 1660-00-259-2929, is classified within Federal Supply Class 1660 (Aircraft Air Conditioning, Heating, and Pressurizing Equipment) of the Aircraft Components and Accessories group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 1660-00-259-2929 |
| Item Name | Housing Assembly,gear,valve |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Status | ACTIVE |
| FSC Application Data | ACFT AIR CONDITIONING SYSTEM |
| General Characteristics Item Description | CONSISTS OF FSCM 98889 CASTING AND NAS607-3-3P PIN,2.31 IN.W,2.550 IN. LG,0.87 IN. H IN |
| 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 |
| Reference | Meaning |
|---|---|
| 657113 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1660-00-259-2929 is a Housing Assembly,gear,valve, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 1340-00-554-4985. Verify interchangeability with system specifications before substitution.
Key specifications for 1660-00-259-2929: FSC Application Data: ACFT AIR CONDITIONING SYSTEM; General Characteristics Item Description: CONSISTS OF FSCM 98889 CASTING AND NAS607-3-3P PIN,2.31 IN.W,2.550 IN. LG,0.87 IN. H IN; End Item Identification: 16608255218. 2 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 1660-00-259-2929 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.