The Adapter,gear to Case, cataloged under National Stock Number 2840-00-980-0253, is classified within Federal Supply Class 2840 (Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components) of the Engines, Turbines, and Components 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1 specification, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 2840-00-980-0253 |
| Item Name | Adapter,gear to Case |
| FSC / FSG | 2840 / 28 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL AMS2485,BLACK OXIDE FINISHAMS2485,ROCKWELL C SCALE 23 MAX HARDNESS,0.5005 IN. MIN,0.5015 IN. MAX OD 1ST STEP 1ST END,0.250 IN. NOM LG IST STEP 1ST END,0.750 IN. NOM OD 2ND STEP 1ST END,0.060 IN. NOM LG 2ND STEP 1ST END,0.6886 IN. MIN,0.6691 IN. MAX OD 2ND END 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 |
|---|---|
| 2-080-037-01 | 5/2 Secondary reference U.S. Government activity |
| 2-080-037-01 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2840-00-980-0253 is a Adapter,gear to Case, classified under FSC 2840, Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components. Status: active.
Key specifications for 2840-00-980-0253: General Characteristics Item Description: STEEL AMS2485,BLACK OXIDE FINISHAMS2485,ROCKWELL C SCALE 23 MAX HARDNESS,0.5005 IN. MIN,0.5015 IN. MAX OD 1ST STEP 1ST END,0.250 IN. NOM LG IST STEP 1ST END,0.750 IN. NOM OD 2ND STEP 1ST END,0.060 IN. NOM LG 2ND STEP 1ST END,0.6886 IN. MIN,0.6691 IN. MAX OD 2ND END IN. 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 2840-00-980-0253 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.