The Chain,leaf, cataloged under National Stock Number 3020-01-305-3225, 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 Emerson Power Transmission Corporation Div Ept. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-305-3225 |
| Primary Part Number | BL-446-51.5LG |
| Item Name | Chain,leaf |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Emerson Power Transmission Corporation Div Ept |
| Status | ACTIVE |
| Link Plate Nominal Thickness | 0.0800 INCHES IN |
| Link Style | 4 X 6 |
| Link Nominal Width | 0.8000 INCHES IN |
| Link Pin Nominal Diameter | 0.2000 INCHES IN |
| Pin Overall Length | 0.9100 INCHES NOMINAL IN |
| Effective Length | 4.2917 FEET NOMINAL FT |
| Pin Fastening Method | RIVETED |
| Link Row Quantity | 1 |
| Material | STEEL |
| Link Plate Width | 0.466 INCHES NOMINAL 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 |
|---|---|
| BL-446-51.5LG PRIMARY | Emerson Power Transmission Corporation Div Ept (USA) |
| Reference | Meaning |
|---|---|
| BL446-51.5LG | 5/2 Secondary reference U.S. Government activity |
| BL-446-52 | 5/9 Secondary reference Emerson Power Transmission Corporation Div Ept |
NSN 3020-01-305-3225 is a Chain,leaf, manufactured by Emerson Power Transmission Corporation Div Ept, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-305-3225 has 1 manufacturer part number on file: BL-446-51.5LG (Emerson Power Transmission Corporation Div Ept).
Key specifications for BL-446-51.5LG: Link Plate Nominal Thickness: 0.0800 INCHES IN; Link Style: 4 X 6; Link Nominal Width: 0.8000 INCHES IN; Link Pin Nominal Diameter: 0.2000 INCHES IN. 10 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.