The Retainer,spring, cataloged under National Stock Number 2815-00-390-0293, 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. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2815-00-390-0293 |
| Primary Part Number | AFB3993A |
| Item Name | Retainer,spring |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | Fairbanks Morse, Llc |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL,1.250 IN. OD. 0.375 IN. ID 0.750 IN. RAISED @FACE,0.063 IN. RAISED FACE HEIGHT,0.438 IN. O/A H IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| AFB3993A PRIMARY | Fairbanks Morse, Llc (USA) |
| Reference | Meaning |
|---|---|
| AFA3993A | 5/9 Secondary reference U.S. Government activity |
| MAFB4868EPC62 | 5/9 Secondary reference U.S. Government activity |
| AFC3993A | 5/9 Secondary reference U.S. Government activity |
| AFB3993A | 3/9 Design control — primary reference U.S. Government activity |
| MBAFB4868A1PC62 | 5/9 Secondary reference U.S. Government activity |
NSN 2815-00-390-0293 is a Retainer,spring, manufactured by Fairbanks Morse, Llc, classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-00-390-0293 has 1 manufacturer part number on file: AFB3993A (Fairbanks Morse, Llc).
Key specifications for AFB3993A: General Characteristics Item Description: STEEL,1.250 IN. OD. 0.375 IN. ID 0.750 IN. RAISED @FACE,0.063 IN. RAISED FACE HEIGHT,0.438 IN. O/A H IN; End Item Identification: FAIRBANKS MORSE MODELAFA-AFB-AFC 3808-1/8. 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.
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.