The Diffuser,air,aircraft Heating an, cataloged under National Stock Number 1660-01-045-0989, 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 1 specification, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-045-0989 |
| Item Name | Diffuser,air,aircraft Heating an |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Status | ACTIVE |
| General Characteristics Item Description | 3.210 IN. LG,3.210 IN. H,1.180 IN. D,4 HOLES 0.228 IN. MAX 0.219 IN.MIN DIA,ONE ON EA SIDE,CTR OF HOLE 0.300 IN. FROM FLAT EDGE 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 |
|---|---|
| 16Y482-1 | 3/2 Design control — primary reference U.S. Government activity |
| 1660PL2183402 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 1660-01-045-0989 is a Diffuser,air,aircraft Heating an, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
Key specifications for 1660-01-045-0989: General Characteristics Item Description: 3.210 IN. LG,3.210 IN. H,1.180 IN. D,4 HOLES 0.228 IN. MAX 0.219 IN.MIN DIA,ONE ON EA SIDE,CTR OF HOLE 0.300 IN. FROM FLAT EDGE IN; End Item Identification: ACFT F-16. 1 specification is 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 1660-01-045-0989 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.