The Chain,roller, cataloged under National Stock Number 3020-01-272-2135, 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 Diamond Chain Co Div of Amsted Industries Inc. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-272-2135 |
| Primary Part Number | 120HS |
| Item Name | Chain,roller |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Diamond Chain Co Div of Amsted Industries Inc |
| Status | ACTIVE |
| Pin Overall Length | 1.7400 INCHES NOMINAL IN |
| End Connection Style | ROLLERLESS |
| Pin Fastening Method | COTTER PIN |
| Bushing Hole Diameter | 0.3750 INCHES NOMINAL IN |
| Link Row Quantity | 2 |
| Material | STEEL |
| 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 |
|---|---|
| 120HS PRIMARY | Diamond Chain Co Div of Amsted Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| 3970-0145-002 | 7/2 Vendor item drawing reference Antenna Products Corporation Dba Antenna Products Corp |
NSN 3020-01-272-2135 is a Chain,roller, manufactured by Diamond Chain Co Div of Amsted Industries Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-272-2135 has 1 manufacturer part number on file: 120HS (Diamond Chain Co Div of Amsted Industries Inc).
Key specifications for 120HS: Pin Overall Length: 1.7400 INCHES NOMINAL IN; End Connection Style: ROLLERLESS; Pin Fastening Method: COTTER PIN; Bushing Hole Diameter: 0.3750 INCHES NOMINAL IN. 6 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.