The Link,roller Chain, cataloged under National Stock Number 3020-01-447-1874, 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 11 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-447-1874 |
| Primary Part Number | NO.25 OSCL |
| Item Name | Link,roller Chain |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Diamond Chain Co Div of Amsted Industries Inc |
| Status | ACTIVE |
| Link Plate Nominal Thickness | 0.0300 INCHES IN |
| Link Style | ROLLER, COMBINATION, TAPERED AND RELIEVED EDGE |
| Link Plate Width at Bushing End | 0.2300 INCHES NOMINAL IN |
| Link Roller Nominal Diameter | 0.1300 INCHES IN |
| Nominal Pitch Distance | 0.2500 INCHES IN |
| Pin Fastening Method | RIVETED |
| Minimum Tensile Strength | 925 POUNDS PER SQUARE INCH LBS |
| Link Row Quantity | 1 |
| Material | STEEL |
| Link Nominal Width Between Plates | 0.1250 INCHES IN |
| Link Plate Width | 0.2300 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| NO.25 OSCL PRIMARY | Diamond Chain Co Div of Amsted Industries Inc (USA) |
| NO.25 OSCL PRIMARY | Emerson Electric Co Browning Mfg Div (USA) |
| A6Q7-25OSCL PRIMARY | Designatronics Inc Stock Drive Products Div (USA) |
| Reference | Meaning |
|---|---|
| NO.25 OSCL | 5/9 Secondary reference Emerson Power Transmission Corporation Div Ept |
| NO.25 OSCL | 5/9 Secondary reference Rexnord Industries Inc. Div Roller Chain Operation |
| ANSI B29.1 25OSCL | 5/2 Secondary reference U.S. Government activity |
NSN 3020-01-447-1874 is a Link,roller Chain, manufactured by Diamond Chain Co Div of Amsted Industries Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-447-1874 has 3 manufacturer part numbers on file: NO.25 OSCL (Diamond Chain Co Div of Amsted Industries Inc), NO.25 OSCL (Emerson Electric Co Browning Mfg Div), A6Q7-25OSCL (Designatronics Inc Stock Drive Products Div).
Key specifications for NO.25 OSCL: Link Plate Nominal Thickness: 0.0300 INCHES IN; Link Style: ROLLER, COMBINATION, TAPERED AND RELIEVED EDGE; Link Plate Width at Bushing End: 0.2300 INCHES NOMINAL IN; Link Roller Nominal Diameter: 0.1300 INCHES IN. 11 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.
NSN 3020-01-447-1874 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.