The Chain,roller, cataloged under National Stock Number 3020-01-450-7538, 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 The Entwistle Company Llc. Government technical data includes 15 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3020-01-450-7538 |
| Primary Part Number | 9310C8620-001 |
| Item Name | Chain,roller |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | The Entwistle Company Llc |
| Status | ACTIVE |
| Second Chain Link Pin Nominal Diameter | 0.3120 INCHES IN |
| Second Chain Link Plate Nominal Thickness | 0.1300 INCHES IN |
| First Chain Link Roller Nominal Diameter | 0.6300 INCHES IN |
| Second Chain Link Style | PIN |
| Effective Length | 48.0000 INCHES NOMINAL IN |
| Second Chain Link Nominal Width Between Plates | 0.8900 INCHES IN |
| First Chain Link Style | ROLLER |
| Nominal Pitch Distance | 1.000 INCHES IN |
| First Chain Link Plate Width | 0.950 INCHES NOMINAL IN |
| Pin Fastening Method | RIVETED |
| Second Chain Link Plate Width | 0.950 INCHES NOMINAL IN |
| First Chain Link Nominal Width Between Plates | 0.6300 INCHES IN |
| Link Row Quantity | 1 |
| Material | STEEL |
| First Chain Link Plate Nominal Thickness | 0.1300 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 |
|---|---|
| 9310C8620-001 | The Entwistle Company Llc (USA) |
| Reference | Meaning |
|---|---|
| ANSI NO. 80 CHAIN 48 PITCH | 5/2 Secondary reference U.S. Government activity |
| 80RB | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-01-450-7538 is a Chain,roller, manufactured by The Entwistle Company Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-450-7538 has 1 manufacturer part number on file: 9310C8620-001 (The Entwistle Company Llc).
Key specifications for 9310C8620-001: Second Chain Link Pin Nominal Diameter: 0.3120 INCHES IN; Second Chain Link Plate Nominal Thickness: 0.1300 INCHES IN; First Chain Link Roller Nominal Diameter: 0.6300 INCHES IN; Second Chain Link Style: PIN. 15 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.