The Link,roller Chain, cataloged under National Stock Number 3020-01-252-4453, 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 Kalmar AC Inc. Government technical data includes 10 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 | 3020-01-252-4453 |
| Primary Part Number | 74250571-2 |
| Item Name | Link,roller Chain |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Kalmar AC Inc |
| Status | ACTIVE |
| Link Plate Nominal Thickness | 0.0940 INCHES IN |
| Link Style | PIN |
| Link Pin Nominal Diameter | 0.2340 INCHES IN |
| Pin Overall Length | 1.0670 INCHES NOMINAL IN |
| Nominal Pitch Distance | 0.750 INCHES IN |
| Pin Fastening Method | COTTER PIN |
| Link Row Quantity | 1 |
| Material | STEEL |
| Link Nominal Width Between Plates | 0.6950 INCHES IN |
| Link Plate Width | 0.583 INCHES NOMINAL 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 |
|---|---|
| 74250571-2 PRIMARY | Kalmar AC Inc (USA) |
NSN 3020-01-252-4453 is a Link,roller Chain, manufactured by Kalmar AC Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-252-4453 has 1 manufacturer part number on file: 74250571-2 (Kalmar AC Inc).
Key specifications for 74250571-2: Link Plate Nominal Thickness: 0.0940 INCHES IN; Link Style: PIN; Link Pin Nominal Diameter: 0.2340 INCHES IN; Pin Overall Length: 1.0670 INCHES NOMINAL IN. 10 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.