The Lock,valve Spring Retainer, cataloged under National Stock Number 2815-00-586-4093, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Perkins Engines Inc. Government technical data includes 12 specifications, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2815-00-586-4093 |
| Primary Part Number | 0221-12-123 |
| Item Name | Lock,valve Spring Retainer |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | Perkins Engines Inc |
| Status | ACTIVE |
| First Ridge Radius | 0.061 INCHES MINIMUM AND 0.063 INCHES MAXIMUM IN |
| Minimum Inside Diameter | 0.251 INCHES IN |
| Thread Provision | UNTHREADED |
| Distance From Bottom to First Ridge Center | 0.055 INCHES NOMINAL IN |
| Largest Outside Diameter | 0.480 INCHES MINIMUM AND 0.482 INCHES MAXIMUM IN |
| First Ridge Width | 0.109 INCHES NOMINAL IN |
| Largest Inside Diameter | 0.310 INCHES MINIMUM AND 0.311 INCHES MAXIMUM IN |
| Style Designator | STRAIGHT BORE W/ONE RIDGE |
| Outside Included Angle in Deg | 10.0 |
| Casehardening Indicator | NOT CASEHARDENED |
| Material | STEEL |
| Metallic Hardness Rating | 241.0 MINIMUM ROCKWELL C AND 269.0 MAXIMUM ROCKWELL C |
| 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 |
|---|---|
| 0221-12-123 PRIMARY | Perkins Engines Inc (USA) |
| Reference | Meaning |
|---|---|
| 33173117 | 5/9 Secondary reference Perkins Engines Inc |
| 33173112 | 5/9 Secondary reference Perkins Engines Inc |
| 33173401 | 5/9 Secondary reference Perkins Engines Inc |
NSN 2815-00-586-4093 is a Lock,valve Spring Retainer, manufactured by Perkins Engines Inc, classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-00-586-4093 has 1 manufacturer part number on file: 0221-12-123 (Perkins Engines Inc).
1 possible match (shared part number, not a government interchangeability claim): 2805-01-193-4634. Verify interchangeability with system specifications before substitution.
Key specifications for 0221-12-123: Overall Height: 0.432 INCHES MINIMUM AND 0.442 INCHES MAXIMUM IN; First Ridge Radius: 0.061 INCHES MINIMUM AND 0.063 INCHES MAXIMUM IN; Minimum Inside Diameter: 0.251 INCHES IN; Thread Provision: UNTHREADED. 12 specifications are 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.