The Lock,valve Spring Retainer, cataloged under National Stock Number 2815-00-192-8767, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Lister Petter Ltd. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2815-00-192-8767 |
| Primary Part Number | 291-20661 |
| Item Name | Lock,valve Spring Retainer |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | Lister Petter Ltd |
| Status | ACTIVE |
| Minimum Inside Diameter | 0.375 INCHES IN |
| Thread Provision | UNTHREADED |
| Largest Outside Diameter | 0.562 INCHES NOMINAL IN |
| Largest Inside Diameter | 0.375 INCHES NOMINAL IN |
| Style Designator | STRAIGHT BORE |
| Smallest Outside Diameter | 0.500 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Material | STEEL |
| 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 |
|---|---|
| 291-20661 PRIMARY | Lister Petter Ltd (GBR) |
| Reference | Meaning |
|---|---|
| 291-20661 | C/1 Advisory reference — outside the item-of-supply concept Curtis Engine & Equipment Company, Inc. Dba Curtis Engine & Equipment |
| 291-20661 | C/1 Advisory reference — outside the item-of-supply concept Astec America Inc. |
NSN 2815-00-192-8767 is a Lock,valve Spring Retainer, manufactured by Lister Petter Ltd, classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-00-192-8767 has 1 manufacturer part number on file: 291-20661 (Lister Petter Ltd).
1 possible match (shared part number, not a government interchangeability claim): 2815-01-312-1306. Verify interchangeability with system specifications before substitution.
Key specifications for 291-20661: Overall Height: 0.437 INCHES NOMINAL IN; Minimum Inside Diameter: 0.375 INCHES IN; Thread Provision: UNTHREADED; Largest Outside Diameter: 0.562 INCHES NOMINAL IN. 8 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.