The Chain,roller, cataloged under National Stock Number 3020-00-640-2289, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3020-00-640-2289 |
| Item Name | Chain,roller |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Second Chain Link Pin Nominal Diameter | 0.1410 INCHES IN |
| FSC Application Data | USAF,TRUCK-CRASH,FIRE AND RESCUE,TYPE 010 |
| Second Chain Link Plate Nominal Thickness | 0.0500 INCHES IN |
| First Chain Link Roller Nominal Diameter | 0.3060 INCHES IN |
| Second Chain Link Style | PIN |
| Effective Length | 3.0000 FEET NOMINAL FT |
| Second Chain Link Nominal Width Between Plates | 0.2500 INCHES IN |
| First Chain Link Style | ROLLER |
| Nondefinitive Spec/std Data | 41 TYPE |
| First Chain Link Plate Width | 0.383 INCHES NOMINAL IN |
| Pin Fastening Method | RIVETED AND SPRING CLIP |
| Second Chain Link Plate Width | 0.320 INCHES NOMINAL IN |
| Minimum Tensile Strength | 2000 POUNDS PER SQUARE INCH LBS |
| First Chain Link Nominal Width Between Plates | 0.2500 INCHES IN |
| Link Row Quantity | 1 |
| 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 |
| Reference | Meaning |
|---|---|
| B29-1-1950TYPE41 | 5/2 Secondary reference U.S. Government activity |
| 10CB15 | 3/9 Design control — primary reference U.S. Government activity |
NSN 3020-00-640-2289 is a Chain,roller, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-640-2289: Second Chain Link Pin Nominal Diameter: 0.1410 INCHES IN; FSC Application Data: USAF,TRUCK-CRASH,FIRE AND RESCUE,TYPE 010; Second Chain Link Plate Nominal Thickness: 0.0500 INCHES IN; First Chain Link Roller Nominal Diameter: 0.3060 INCHES IN. 17 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.