The Chain,roller, cataloged under National Stock Number 3020-00-021-5839, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-021-5839 |
| Item Name | Chain,roller |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Second Chain Link Plate Nominal Thickness | 0.0300 INCHES IN |
| Second Chain Link Bushing Nominal Outside Diameter | 0.1300 INCHES IN |
| Second Chain Link Style | ROLLERLESS |
| Effective Length | 1.0625 FEET NOMINAL FT |
| Second Chain Link Nominal Width Between Plates | 0.1250 INCHES IN |
| First Chain Link Style | PIN |
| First Chain Link Pin Nominal Diameter | 0.0910 INCHES IN |
| First Chain Link Plate Width | 0.205 INCHES NOMINAL IN |
| Pin Fastening Method | RIVETED AND SPRING CLIP |
| Second Chain Link Plate Width | 0.238 INCHES NOMINAL IN |
| Minimum Tensile Strength | 780 POUNDS PER SQUARE INCH LBS |
| First Chain Link Nominal Width Between Plates | 0.1250 INCHES IN |
| Link Row Quantity | 1 |
| Material | STEEL |
| First Chain Link Plate Nominal Thickness | 0.0300 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 |
|---|---|
| 25GRADEA51PITCHES | 3/9 Design control — primary reference Diamond Chain Co Div of Amsted Industries Inc |
| 215-20352-1 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 3020-00-021-5839 is a Chain,roller, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-021-5839: Second Chain Link Plate Nominal Thickness: 0.0300 INCHES IN; Second Chain Link Bushing Nominal Outside Diameter: 0.1300 INCHES IN; Second Chain Link Style: ROLLERLESS; Effective Length: 1.0625 FEET NOMINAL FT. 15 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.