The Chain,roller, cataloged under National Stock Number 3020-00-256-6537, 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 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 13 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-256-6537 |
| Primary Part Number | 2530873 |
| Item Name | Chain,roller |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Second Chain Link Pin Nominal Diameter | 0.3550 INCHES IN |
| Second Chain Link Plate Nominal Thickness | 0.0940 INCHES IN |
| First Chain Link Roller Nominal Diameter | 0.4980 INCHES IN |
| Second Chain Link Style | PIN |
| Effective Length | 131.2500 FEET NOMINAL FT |
| Second Chain Link Nominal Width Between Plates | 0.5070 INCHES IN |
| First Chain Link Style | ROLLER |
| First Chain Link Plate Width | 0.600 INCHES NOMINAL IN |
| Second Chain Link Plate Width | 0.710 INCHES NOMINAL IN |
| First Chain Link Nominal Width Between Plates | 0.5070 INCHES IN |
| Link Row Quantity | 1 |
| Material | STEEL |
| First Chain Link Plate Nominal Thickness | 0.0940 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 |
|---|---|
| 2530873 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 3020-00-256-6537 is a Chain,roller, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-256-6537 has 1 manufacturer part number on file: 2530873 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 2530873: Second Chain Link Pin Nominal Diameter: 0.3550 INCHES IN; Second Chain Link Plate Nominal Thickness: 0.0940 INCHES IN; First Chain Link Roller Nominal Diameter: 0.4980 INCHES IN; Second Chain Link Style: PIN. 13 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.