The Chain,roller, cataloged under National Stock Number 3020-01-451-0449, 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 9 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-451-0449 |
| Primary Part Number | NO.50-118PITCHES |
| 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 |
| First Chain Link Roller Nominal Diameter | 0.4000 INCHES IN |
| Second Chain Link Style | PIN |
| Effective Length | 74.3400 INCHES NOMINAL IN |
| First Chain Link Style | ROLLER |
| Nominal Pitch Distance | 0.6300 INCHES IN |
| First Chain Link Plate Width | 0.5800 INCHES NOMINAL IN |
| First Chain Link Nominal Width Between Plates | 0.3800 INCHES IN |
| Material | STEEL |
| First Chain Link Plate Nominal Thickness | 0.0800 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 |
|---|---|
| NO.50-118PITCHES PRIMARY | Diamond Chain Co Div of Amsted Industries Inc (USA) |
| 9310C4535-001 PRIMARY | The Entwistle Company Llc (USA) |
| Reference | Meaning |
|---|---|
| NO.50-118PITCHES | 5/9 Secondary reference Rexnord Industries Inc. Div Roller Chain Operation |
| NO.50-118PITCHES | 5/9 Secondary reference Emerson Power Transmission Corporation Div Ept |
| B29.1NO.50-118 PITCHES | 5/2 Secondary reference U.S. Government activity |
| ANSI NO. 50 CHAIN, 118 PITCH IN | 5/2 Secondary reference U.S. Government activity |
NSN 3020-01-451-0449 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 3020-01-451-0449 has 2 manufacturer part numbers on file: NO.50-118PITCHES (Diamond Chain Co Div of Amsted Industries Inc), 9310C4535-001 (The Entwistle Company Llc).
Key specifications for NO.50-118PITCHES: First Chain Link Roller Nominal Diameter: 0.4000 INCHES IN; Second Chain Link Style: PIN; Effective Length: 74.3400 INCHES NOMINAL IN; First Chain Link Style: ROLLER. 9 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.