The Arrester,spark Exhaust, cataloged under National Stock Number 2990-01-578-6960, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Miratech Group Llc. Government technical data includes 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 2990-01-578-6960 |
| Primary Part Number | 4057005000 |
| Item Name | Arrester,spark Exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Miratech Group Llc |
| Status | ACTIVE |
| Operating Position | UNIVERSAL |
| Overall Diameter | 16.250 INCHES NOMINAL IN |
| Body Shape | ROUND |
| Surface Treatment | PLASTIC POLYPROPYLENE |
| Material | STEEL |
| Device Design Type | BAFFLE |
| 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 |
|---|---|
| 4057005000 PRIMARY | Miratech Group Llc (USA) |
| Reference | Meaning |
|---|---|
| STD-5MSA2 | D/9 Drawing number reference only Maxco, Llc Dba Maxim Silencers |
| 4057005000 | 3/9 Design control — primary reference Maxco, Llc Dba Maxim Silencers |
NSN 2990-01-578-6960 is a Arrester,spark Exhaust, manufactured by Miratech Group Llc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-578-6960 has 1 manufacturer part number on file: 4057005000 (Miratech Group Llc).
Key specifications for 4057005000: Operating Position: UNIVERSAL; Overall Diameter: 16.250 INCHES NOMINAL IN; Overall Length: 55.000 INCHES NOMINAL IN; Body Shape: ROUND. 6 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.