The Chain,roller, cataloged under National Stock Number 3020-00-349-7256, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-349-7256 |
| Item Name | Chain,roller |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Second Chain Link Pin Nominal Diameter | 0.4380 INCHES IN |
| Second Chain Link Plate Nominal Thickness | 0.2500 INCHES IN |
| First Chain Link Roller Nominal Diameter | 2.0000 INCHES IN |
| Second Chain Link Style | PIN |
| Second Chain Link Nominal Width Between Plates | 1.1250 INCHES IN |
| First Chain Link Style | ROLLER |
| First Chain Link Plate Width | 1.250 INCHES NOMINAL IN |
| Pin Fastening Method | COTTER PIN |
| Second Chain Link Plate Width | 1.250 INCHES NOMINAL IN |
| Minimum Tensile Strength | 2500 POUNDS PER SQUARE INCH LBS |
| First Chain Link Nominal Width Between Plates | 1.1250 INCHES IN |
| Link Row Quantity | 1 |
| Material | STEEL |
| First Chain Link Plate Nominal Thickness | 0.2500 INCHES IN |
| 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 |
|---|---|
| RC6018COUPLING CHAIN | 3/9 Design control — primary reference U.S. Government activity |
NSN 3020-00-349-7256 is a Chain,roller, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-349-7256: Second Chain Link Pin Nominal Diameter: 0.4380 INCHES IN; Second Chain Link Plate Nominal Thickness: 0.2500 INCHES IN; First Chain Link Roller Nominal Diameter: 2.0000 INCHES IN; Second Chain Link Style: PIN. 14 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.