The Chain,roller, cataloged under National Stock Number 3020-00-678-7734, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-678-7734 |
| Item Name | Chain,roller |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Second Chain Link Pin Nominal Diameter | 0.3100 INCHES IN |
| Second Chain Link Plate Nominal Thickness | 0.1250 INCHES IN |
| First Chain Link Roller Nominal Diameter | 0.6250 INCHES IN |
| Pin Overall Length | 1.2656 INCHES NOMINAL IN |
| Second Chain Link Style | PIN |
| Effective Length | 42.0000 FEET NOMINAL FT |
| Second Chain Link Nominal Width Between Plates | 0.8750 INCHES IN |
| First Chain Link Style | ROLLER |
| Nominal Pitch Distance | 1.000 INCHES IN |
| First Chain Link Plate Width | 0.910 INCHES NOMINAL IN |
| Pin Fastening Method | RIVETED |
| Second Chain Link Plate Width | 0.750 INCHES NOMINAL IN |
| First Chain Link Nominal Width Between Plates | 0.6250 INCHES IN |
| Link Row Quantity | 1 |
| Material | STEEL |
| First Chain Link Plate Nominal Thickness | 0.1250 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 |
|---|---|
| 34397 | 3/2 Design control — primary reference U.S. Government activity |
| 034397 | 5/9 Secondary reference U.S. Government activity |
NSN 3020-00-678-7734 is a Chain,roller, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5360-01-109-2716, 3417-01-143-0718. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-00-678-7734: Second Chain Link Pin Nominal Diameter: 0.3100 INCHES IN; Second Chain Link Plate Nominal Thickness: 0.1250 INCHES IN; First Chain Link Roller Nominal Diameter: 0.6250 INCHES IN; Pin Overall Length: 1.2656 INCHES NOMINAL IN. 16 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.