The Retainer, cataloged under National Stock Number 2815-01-104-8915, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Fairbanks Morse, Llc. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Retainer |
| FSC / FSG | 2815 — Diesel Engines and Components (FSG 28) |
| Manufacturers | Fairbanks Morse, Llc (CAGE 7PZX0) |
| Parameter | Value |
|---|---|
| NSN | 2815-01-104-8915 |
| Primary Part Number | 4321021 |
| Item Name | Retainer |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | Fairbanks Morse, Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 4321021 PRIMARY | Fairbanks Morse, Llc (USA) |
| Reference | Meaning |
|---|---|
| DRP-15990A PC 4 | C/1 Advisory reference — outside the item-of-supply concept Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco |
| 4321021 | 3/9 Design control — primary reference Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco |
NSN 2815-01-104-8915 is a Retainer, manufactured by Fairbanks Morse, Llc, classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-01-104-8915 has 1 manufacturer part number on file: 4321021 (Fairbanks Morse, Llc).
1 possible match (shared part number, not a government interchangeability claim): 3110-01-484-4454. Verify interchangeability with system specifications before substitution.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
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.