The Chain,roller, cataloged under National Stock Number 3020-01-269-9579, 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 Electric Co Browning Mfg Div. Government technical data includes 14 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-269-9579 |
| Primary Part Number | C2120X57 |
| Item Name | Chain,roller |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Emerson Electric Co Browning Mfg Div |
| Status | ACTIVE |
| Second Chain Link Pin Nominal Diameter | 0.4370 INCHES IN |
| Second Chain Link Plate Nominal Thickness | 0.1870 INCHES IN |
| First Chain Link Roller Nominal Diameter | 0.8750 INCHES IN |
| Second Chain Link Style | PIN |
| Effective Length | 14.2500 FEET NOMINAL FT |
| Second Chain Link Nominal Width Between Plates | 1.3740 INCHES IN |
| First Chain Link Style | ROLLER |
| First Chain Link Plate Width | 1.344 INCHES NOMINAL IN |
| Pin Fastening Method | COTTER PIN |
| Second Chain Link Plate Width | 1.230 INCHES NOMINAL IN |
| First Chain Link Nominal Width Between Plates | 1.0000 INCHES IN |
| Link Row Quantity | 1 |
| Material | STEEL |
| First Chain Link Plate Nominal Thickness | 0.1870 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 |
|---|---|
| C2120X57 PRIMARY | Emerson Electric Co Browning Mfg Div (USA) |
| Reference | Meaning |
|---|---|
| 1472 PIECE 199 | 5/9 Secondary reference Gulf Coast Holdings, Inc Dba Unidynamics |
| 1472 | D/9 Drawing number reference only U.S. Government activity |
| 1472 PIECE 199 | 5/9 Secondary reference U.S. Government activity |
| C2120X57 | C/1 Advisory reference — outside the item-of-supply concept Gulf Coast Holdings, Inc Dba Unidynamics |
| 1472 PIECE 199 | 5/2 Secondary reference U.S. Government activity |
NSN 3020-01-269-9579 is a Chain,roller, manufactured by Emerson Electric Co Browning Mfg Div, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-269-9579 has 1 manufacturer part number on file: C2120X57 (Emerson Electric Co Browning Mfg Div).
Key specifications for C2120X57: Second Chain Link Pin Nominal Diameter: 0.4370 INCHES IN; Second Chain Link Plate Nominal Thickness: 0.1870 INCHES IN; First Chain Link Roller Nominal Diameter: 0.8750 INCHES IN; Second Chain Link Style: PIN. 14 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.