The Arrester,spark Exhaust, cataloged under National Stock Number 2990-01-446-5265, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-446-5265 |
| Item Name | Arrester,spark Exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Status | ACTIVE |
| Operating Position | UNIVERSAL |
| Inlet Location | CENTRALLY LOCATED ON THE END SECTION OF THE ARRESTER |
| Inlet Thread Location | EXTERNAL |
| Outlet Outside Diameter | 1.000 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Inlet Connection Type | THREADED LOCATION NOT OTHERWISE SPECIFIED |
| Thread Direction | RIGHT-HAND INLET |
| Inlet Thread Size | 1 5/16-12 LOCATION NOT OTHERWISE SPECIFIED |
| Surface Treatment | PASSIVATE |
| Material | STEEL |
| Outlet Connection Type | UNTHREADED LOCATION NOT OTHERWISE SPECIFIED |
| Outlet Location | OPPOSITE END OF ITEM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 88-5522 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2990-01-446-5265 is a Arrester,spark Exhaust, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
Key specifications for 2990-01-446-5265: Operating Position: UNIVERSAL; Inlet Location: CENTRALLY LOCATED ON THE END SECTION OF THE ARRESTER; Inlet Thread Location: EXTERNAL; Outlet Outside Diameter: 1.000 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED 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.