The Chain,roller, cataloged under National Stock Number 3020-01-252-8446, 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 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 | 3020-01-252-8446 |
| Primary Part Number | 74752527-7 |
| Item Name | Chain,roller |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Kalmar AC Inc |
| Status | ACTIVE |
| Second Chain Link Pin Nominal Diameter | 0.2340 INCHES IN |
| Second Chain Link Plate Nominal Thickness | 0.0940 INCHES IN |
| First Chain Link Roller Nominal Diameter | 0.4690 INCHES IN |
| Second Chain Link Style | PIN |
| Effective Length | 3.9375 FEET NOMINAL FT |
| Second Chain Link Nominal Width Between Plates | 0.6880 INCHES IN |
| First Chain Link Style | ROLLER |
| First Chain Link Plate Width | 0.712 INCHES NOMINAL IN |
| Pin Fastening Method | COTTER PIN |
| Second Chain Link Plate Width | 0.615 INCHES NOMINAL IN |
| First Chain Link Nominal Width Between Plates | 0.5000 INCHES IN |
| Link Row Quantity | 1 |
| 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 |
|---|---|
| 74752527-7 PRIMARY | Kalmar AC Inc (USA) |
NSN 3020-01-252-8446 is a Chain,roller, manufactured by Kalmar AC Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-252-8446 has 1 manufacturer part number on file: 74752527-7 (Kalmar AC Inc).
Key specifications for 74752527-7: Second Chain Link Pin Nominal Diameter: 0.2340 INCHES IN; Second Chain Link Plate Nominal Thickness: 0.0940 INCHES IN; First Chain Link Roller Nominal Diameter: 0.4690 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.