The Chain,roller, cataloged under National Stock Number 3020-01-197-8957, 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 Kornylak Corp. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-197-8957 |
| Primary Part Number | OSDC-450-C |
| Item Name | Chain,roller |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Kornylak Corp |
| Status | ACTIVE |
| Second Chain Link Pin Nominal Diameter | 0.2000 INCHES IN |
| Second Chain Link Plate Nominal Thickness | 0.0800 INCHES IN |
| First Chain Link Roller Nominal Diameter | 0.4000 INCHES IN |
| Second Chain Link Style | PIN |
| Effective Length | 1.3541 FEET NOMINAL FT |
| Second Chain Link Nominal Width Between Plates | 0.3750 INCHES IN |
| First Chain Link Style | ROLLER |
| First Chain Link Plate Width | 0.594 INCHES NOMINAL IN |
| Pin Fastening Method | RIVETED |
| Second Chain Link Plate Width | 0.512 INCHES NOMINAL IN |
| First Chain Link Nominal Width Between Plates | 0.3750 INCHES IN |
| Link Row Quantity | 2 |
| 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 |
|---|---|
| OSDC-450-C | Kornylak Corp (USA) |
| Reference | Meaning |
|---|---|
| OSDC-450 | D/9 Drawing number reference only Dalton Gear Company |
| OSDC-450-C | 3/9 Design control — primary reference Dalton Gear Company |
NSN 3020-01-197-8957 is a Chain,roller, manufactured by Kornylak Corp, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-197-8957 has 1 manufacturer part number on file: OSDC-450-C (Kornylak Corp).
1 possible match (shared part number, not a government interchangeability claim): 3010-01-215-1875. Verify interchangeability with system specifications before substitution.
Key specifications for OSDC-450-C: Second Chain Link Pin Nominal Diameter: 0.2000 INCHES IN; Second Chain Link Plate Nominal Thickness: 0.0800 INCHES IN; First Chain Link Roller Nominal Diameter: 0.4000 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.