The Retainer,compressor Blade,aircra, cataloged under National Stock Number 2840-01-139-7398, 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1 specification, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2840-01-139-7398 |
| Item Name | Retainer,compressor Blade,aircra |
| FSC / FSG | 2840 / 28 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components |
| Status | ACTIVE |
| Material | STEEL |
| 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 |
|---|---|
| 10160173 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 4070T12P01 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2840-01-139-7398 is a Retainer,compressor Blade,aircra, classified under FSC 2840, Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5325-01-475-1195. Verify interchangeability with system specifications before substitution.
Key specifications for 2840-01-139-7398: Special Features: MATERIAL STEEL, AMS 5688;ANY ACCEPTABLE SURFACE TREATMENT;STRENGTH NOT RATED;MATERIAL HARDNESS RATING 60.0 ROCKWELL C MIN AND 72.0 ROCKWELL C MAX;NOT CASEHARDENED;INTERNAL RING STYLE;90 DEGREE PARALLEL END STYLE;INSIDE DIAMETER 15.562 IN. MIN AND 15.772 IN. MAX;OUTSIDE DIAMETER 15.870 IN. MIN AND 16.070 IN. MAX;CROSS-SECTIONAL SHAPE STYLE ROUNDED CORNERS;MAJOR THICKNESS 0.039 IN. MIN AND 0.041 IN. MAX;EXTERNAL USAGE DESIGN IN; Material: STEEL. 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 2840-01-139-7398 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.