The Piston Assembly,dashpot, cataloged under National Stock Number 2990-01-024-1509, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-024-1509 |
| Primary Part Number | 4N6408 |
| Item Name | Piston Assembly,dashpot |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| General Characteristics Item Description | CONSISTS OF 11083 4N6403 SEAT 1,11083 4N6407 SPOOL 1,11083 4N6406 RING 1,11083 4N6404 RING 1 |
| 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 |
|---|---|
| 4N6408 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 2990-01-024-1509 is a Piston Assembly,dashpot, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-024-1509 has 1 manufacturer part number on file: 4N6408 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 4N6408: General Characteristics Item Description: CONSISTS OF 11083 4N6403 SEAT 1,11083 4N6407 SPOOL 1,11083 4N6406 RING 1,11083 4N6404 RING 1; End Item Identification: ENGINE,DIESEL,11083,MODEL 1160 TRUCK ENGINE. 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.