The Arrester,spark Exhaust, cataloged under National Stock Number 2990-01-683-7253, 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 3 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-683-7253 |
| Primary Part Number | SM3SA-14-ST |
| Item Name | Arrester,spark Exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Supplementary Features | WEIGHT 985 POUNDS LBS |
| Surface Treatment | PAINT HEAT RESISTANT |
| 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 |
|---|---|
| SM3SA-14-ST PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 2990-01-683-7253 is a Arrester,spark Exhaust, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-683-7253 has 1 manufacturer part number on file: SM3SA-14-ST (Caterpillar Inc Div Caterpillar Defense).
Key specifications for SM3SA-14-ST: Supplementary Features: WEIGHT 985 POUNDS LBS; Overall Length: 122.0 INCHES NOMINAL IN; Special Features: TEMPERATURE RATING 950 DEGREES FARENHEIT; Surface Treatment: PAINT HEAT RESISTANT. 3 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.