The Arrester,spark Exhaust, cataloged under National Stock Number 2990-01-321-6513, 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11 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-321-6513 |
| Item Name | Arrester,spark Exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Status | ACTIVE |
| Inlet Flange Shape | ROUND LOCATION NOT OTHERWISE SPECIFIED |
| Inlet Location | CENTRALLY LOCATED IN END SECTION OF BODY |
| Overall Diameter | 60.375 INCHES NOMINAL IN |
| Inlet Projection Length | 3.500 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Outlet Flange Shape | ROUND LOCATION NOT OTHERWISE SPECIFIED |
| Body Shape | ROUND |
| Surface Treatment | ENAMEL AND PAINT HEAT RESISTANT |
| Material | STEEL |
| Outlet Projection Length | 3.500 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Device Design Type | DIRECTIONAL VANE |
| Outlet Connection Type | FLANGE LOCATION NOT OTHERWISE SPECIFIED |
| 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 |
|---|---|
| MDL16 M-51 SPECIAL | 3/9 Design control — primary reference Beaird Industries Inc. |
| 141-1D631A | C/1 Advisory reference — outside the item-of-supply concept Beaird Industries Inc. |
| 141-D631A | 5/9 Secondary reference Beaird Industries Inc. |
NSN 2990-01-321-6513 is a Arrester,spark Exhaust, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
Key specifications for 2990-01-321-6513: Inlet Flange Shape: ROUND LOCATION NOT OTHERWISE SPECIFIED; Inlet Location: CENTRALLY LOCATED IN END SECTION OF BODY; Overall Diameter: 60.375 INCHES NOMINAL IN; Inlet Projection Length: 3.500 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.