The Chain,roller, cataloged under National Stock Number 3020-00-697-5589, 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 U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 15 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-697-5589 |
| Primary Part Number | 7966602 |
| Item Name | Chain,roller |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Second Chain Link Plate Nominal Thickness | 0.0500 INCHES IN |
| Second Chain Link Bushing Nominal Outside Diameter | 0.2000 INCHES IN |
| Second Chain Link Style | ROLLERLESS |
| Effective Length | 1.6250 FEET NOMINAL FT |
| Second Chain Link Nominal Width Between Plates | 0.1875 INCHES IN |
| First Chain Link Style | PIN |
| First Chain Link Pin Nominal Diameter | 0.1410 INCHES IN |
| Nominal Pitch Distance | 0.375 INCHES IN |
| First Chain Link Plate Width | 0.307 INCHES NOMINAL IN |
| Pin Fastening Method | RIVETED |
| Second Chain Link Plate Width | 0.356 INCHES NOMINAL IN |
| First Chain Link Nominal Width Between Plates | 0.2875 INCHES IN |
| Link Row Quantity | 4 |
| Material | STEEL |
| First Chain Link Plate Nominal Thickness | 0.0500 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 |
|---|---|
| 7966602 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 907387 | 5/9 Secondary reference General Motors Corp Delco Moraine Ndh Div |
| MS421-35-4-1RCA | 4/1 Identification reference U.S. Government activity |
| WI282-50 | 5/9 Secondary reference Diamond Chain Co Div of Amsted Industries Inc |
NSN 3020-00-697-5589 is a Chain,roller, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-697-5589 has 1 manufacturer part number on file: 7966602 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7966602: Second Chain Link Plate Nominal Thickness: 0.0500 INCHES IN; Second Chain Link Bushing Nominal Outside Diameter: 0.2000 INCHES IN; Second Chain Link Style: ROLLERLESS; Effective Length: 1.6250 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.