The Tube, cataloged under National Stock Number 1660-00-697-3512, 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 R.e. Darling Co., Inc.. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Tube |
| FSC / FSG | 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment (FSG 16) |
| Manufacturers | R.e. Darling Co., Inc. (CAGE 28445) |
| Parameter | Value |
|---|---|
| NSN | 1660-00-697-3512 |
| Primary Part Number | 03T12B |
| Item Name | Tube |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | R.e. Darling Co., Inc. |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 03T12B | R.e. Darling Co., Inc. (USA) |
| 03T12A | R.e. Darling Co., Inc. (USA) |
| Reference | Meaning |
|---|---|
| GUT12A | 5/9 Secondary reference Great Lakes Rubber Corp |
| D0HB57PT12C | 5/2 Secondary reference U.S. Government activity |
| D0HB57PT12D | 5/2 Secondary reference U.S. Government activity |
| V03512T | 5/9 Secondary reference U.S. Government activity |
| GLT12A | 5/9 Secondary reference Great Lakes Rubber Corp |
| D0HB57PT12A | 3/2 Design control — primary reference U.S. Government activity |
NSN 1660-00-697-3512 is a Tube, manufactured by R.e. Darling Co., Inc., classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-00-697-3512 has 2 manufacturer part numbers on file: 03T12B (R.e. Darling Co., Inc.), 03T12A (R.e. Darling Co., Inc.).
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 1660-00-697-3512 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.