The Diffuser,air,aircraft Heating an, cataloged under National Stock Number 1660-00-522-3812, 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 3 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-00-522-3812 |
| Item Name | Diffuser,air,aircraft Heating an |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM ALLOY; 5.000 IN. MAXIMUM LENGTH; 5.000 IN. MAXIMUM DIAMETER IN |
| Specification/standard Data | 97499-209-070-568 MANUFACTURERS SOURCE CONTROL |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY SOURCE CONTROL DRAWING |
| 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 |
|---|---|
| 58D17 | Grimes Aerospace Company (USA) |
| 58D17 | Honeywell International Inc. Dba Honeywell International (USA) |
| 58D17 | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) (USA) |
| Reference | Meaning |
|---|---|
| 209-070-568-1 | 3/3 Design control — primary reference U.S. Government activity |
| 209-070-568 | 1/3 Source control — Government-approved source U.S. Government activity |
NSN 1660-00-522-3812 is a Diffuser,air,aircraft Heating an, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-00-522-3812 has 3 manufacturer part numbers on file: 58D17 (Grimes Aerospace Company), 58D17 (Honeywell International Inc. Dba Honeywell International), 58D17 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)).
Key specifications for 1660-00-522-3812: General Characteristics Item Description: ALUMINUM ALLOY; 5.000 IN. MAXIMUM LENGTH; 5.000 IN. MAXIMUM DIAMETER IN; Specification/standard Data: 97499-209-070-568 MANUFACTURERS SOURCE CONTROL; Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY SOURCE CONTROL DRAWING. 3 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 1660-00-522-3812 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.