The Chain Assembly,roller, cataloged under National Stock Number 3020-01-382-6663, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Diamond Chain Co Div of Amsted Industries Inc. Government technical data includes 2 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-382-6663 |
| Primary Part Number | X-118424A |
| Item Name | Chain Assembly,roller |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Diamond Chain Co Div of Amsted Industries Inc |
| Status | ACTIVE |
| Criticality Code Justification | FEAT |
| Material | STEEL CORROSION RESISTING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| X-118424A | Diamond Chain Co Div of Amsted Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| X-118424 | D/9 Drawing number reference only Diamond Chain Co Div of Amsted Industries Inc |
| MAG25403 | D/9 Drawing number reference only U.S. Government activity |
| MAG25403-11 | 3/2 Design control — primary reference U.S. Government activity |
| MAG25403-11 | 5/9 Secondary reference Speco Corp |
NSN 3020-01-382-6663 is a Chain Assembly,roller, manufactured by Diamond Chain Co Div of Amsted Industries Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-382-6663 has 1 manufacturer part number on file: X-118424A (Diamond Chain Co Div of Amsted Industries Inc).
Key specifications for X-118424A: Overall Height: 0.344 INCHES NOMINAL IN; Criticality Code Justification: FEAT; Overall Length: 78.724 INCHES NOMINAL IN; Special Features: WEAPON SYSTEM ESSENTIAL. 2 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.