The Chain,roller, cataloged under National Stock Number 3020-01-421-5172, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-421-5172 |
| Item Name | Chain,roller |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Nominal Pitch Distance | 0.625 INCHES IN |
| 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 | X |
| Reference | Meaning |
|---|---|
| 50271000 ITEM 6 | 5/9 Secondary reference U.S. Government activity |
| 50271000 ITEM 6 | 5/9 Secondary reference Gulf Coast Holdings, Inc Dba Unidynamics |
| 50271000-10 | 5/2 Secondary reference U.S. Government activity |
| PL50271000 ITEM 6 | 5/2 Secondary reference U.S. Government activity |
| 50271000 ITEM 6 | 5/2 Secondary reference U.S. Government activity |
| 50271000-10 | 3/9 Design control — primary reference Gulf Coast Holdings, Inc Dba Unidynamics |
| PL50271000 ITEM 6 | 5/9 Secondary reference Gulf Coast Holdings, Inc Dba Unidynamics |
| 50271000-10 | 5/9 Secondary reference U.S. Government activity |
| PL50271000 ITEM 6 | 5/9 Secondary reference U.S. Government activity |
NSN 3020-01-421-5172 is a Chain,roller, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-421-5172: Nominal Pitch Distance: 0.625 INCHES IN; End Item Identification: CRANE DEFENSE SYSTEMS WINCH ASSEMBLY; Material: STEEL CORROSION RESISTING. 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.