The Chain,leaf, cataloged under National Stock Number 3020-01-293-4428, 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 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-293-4428 |
| Primary Part Number | BL-646 207 PITCHES |
| 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 | 0.1250 INCHES IN |
| Link Style | 4 X 6 |
| Link Nominal Width | 1.2500 INCHES IN |
| Link Pin Nominal Diameter | 0.3120 INCHES IN |
| Pin Overall Length | 1.4410 INCHES NOMINAL IN |
| Effective Length | 12.9375 FEET NOMINAL FT |
| Pin Fastening Method | RIVETED |
| Minimum Tensile Strength | 22000 POUNDS PER SQUARE INCH LBS |
| Link Row Quantity | 1 |
| Material | STEEL |
| Link Plate Width | 0.700 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-646 207 PITCHES | Emerson Power Transmission Corporation Div Ept (USA) |
| Reference | Meaning |
|---|---|
| 333126 | 3/9 Design control — primary reference Emerson Power Transmission Corporation Div Ept |
NSN 3020-01-293-4428 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 3020-01-293-4428 has 1 manufacturer part number on file: BL-646 207 PITCHES (Emerson Power Transmission Corporation Div Ept).
Key specifications for BL-646 207 PITCHES: Link Plate Nominal Thickness: 0.1250 INCHES IN; Link Style: 4 X 6; Link Nominal Width: 1.2500 INCHES IN; Link Pin Nominal Diameter: 0.3120 INCHES IN. 11 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.