The Chain,roller, cataloged under National Stock Number 3020-01-289-3607, 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 Martin Sprocket and Gear Inc. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-289-3607 |
| Primary Part Number | 6020 CHN |
| Item Name | Chain,roller |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Martin Sprocket and Gear Inc |
| Status | ACTIVE |
| Second Chain Link Pin Nominal Diameter | 0.2340 INCHES IN |
| Second Chain Link Plate Nominal Thickness | 0.0940 INCHES IN |
| First Chain Link Roller Nominal Diameter | 0.4690 INCHES IN |
| Second Chain Link Style | PIN |
| Effective Length | 1.2500 FEET NOMINAL FT |
| Second Chain Link Nominal Width Between Plates | 0.5000 INCHES IN |
| First Chain Link Style | ROLLER |
| First Chain Link Plate Width | 0.712 INCHES NOMINAL IN |
| Pin Fastening Method | COTTER PIN AND RIVETED |
| Second Chain Link Plate Width | 0.615 INCHES NOMINAL IN |
| First Chain Link Nominal Width Between Plates | 0.5000 INCHES IN |
| Link Row Quantity | 2 |
| Material | STEEL |
| First Chain Link Plate Nominal Thickness | 0.0940 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 |
| Part Number | Manufacturer |
|---|---|
| 6020 CHN PRIMARY | Martin Sprocket and Gear Inc (USA) |
| Reference | Meaning |
|---|---|
| 6020 CHN 20PITCHES | 3/9 Design control — primary reference Martin Sprocket and Gear Inc |
NSN 3020-01-289-3607 is a Chain,roller, manufactured by Martin Sprocket and Gear Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-289-3607 has 1 manufacturer part number on file: 6020 CHN (Martin Sprocket and Gear Inc).
Key specifications for 6020 CHN: Second Chain Link Pin Nominal Diameter: 0.2340 INCHES IN; Second Chain Link Plate Nominal Thickness: 0.0940 INCHES IN; First Chain Link Roller Nominal Diameter: 0.4690 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.