The Lock,valve Spring Retainer, cataloged under National Stock Number 2815-00-175-9472, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 11 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2815-00-175-9472 |
| Primary Part Number | 1S2898 |
| Item Name | Lock,valve Spring Retainer |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Minimum Inside Diameter | 0.288 INCHES IN |
| Thread Provision | UNTHREADED |
| Largest Outside Diameter | 0.456 INCHES NOMINAL IN |
| Largest Inside Diameter | 0.312 INCHES NOMINAL IN |
| Style Designator | STRAIGHT BORE-TOP AND BOTTOM COUNTERBORE |
| Bottom Counterbore Depth | 0.140 INCHES NOMINAL IN |
| Largest Outside Width | 0.454 INCHES NOMINAL IN |
| Outside Included Angle in Deg | 12.0 |
| Casehardening Indicator | NOT CASEHARDENED |
| Top Counterbore Depth | 0.135 INCHES NOMINAL IN |
| 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 |
|---|---|
| 1S2898 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| 1S2878 | C/1 Advisory reference — outside the item-of-supply concept Caterpillar Inc Div Caterpillar Defense |
| IPD1S2898 | 5/9 Secondary reference Industrial Parts Depot, Llc Dba Ipd |
NSN 2815-00-175-9472 is a Lock,valve Spring Retainer, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-00-175-9472 has 1 manufacturer part number on file: 1S2898 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 1S2898: Overall Height: 0.384 INCHES NOMINAL IN; Minimum Inside Diameter: 0.288 INCHES IN; Thread Provision: UNTHREADED; Largest Outside Diameter: 0.456 INCHES NOMINAL IN. 11 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.