The Chain,roller, cataloged under National Stock Number 3020-01-186-3591, 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 Altra Industrial Motion Corp.. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-186-3591 |
| Primary Part Number | ASA40SL 43 LINKS |
| Item Name | Chain,roller |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Altra Industrial Motion Corp. |
| Status | ACTIVE |
| Second Chain Link Pin Nominal Diameter | 0.1560 INCHES IN |
| Second Chain Link Plate Nominal Thickness | 0.3120 INCHES IN |
| First Chain Link Roller Nominal Diameter | 0.3120 INCHES IN |
| Pin Overall Length | 0.6500 INCHES NOMINAL IN |
| Second Chain Link Style | PIN |
| Effective Length | 1.7917 FEET NOMINAL FT |
| Second Chain Link Nominal Width Between Plates | 0.3120 INCHES IN |
| First Chain Link Style | ROLLER |
| First Chain Link Plate Width | 0.460 INCHES NOMINAL IN |
| Pin Fastening Method | RIVETED |
| Second Chain Link Plate Width | 0.460 INCHES NOMINAL IN |
| First Chain Link Nominal Width Between Plates | 0.3120 INCHES IN |
| Link Row Quantity | 1 |
| Material | STEEL |
| First Chain Link Plate Nominal Thickness | 0.4200 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 |
|---|---|
| ASA40SL 43 LINKS PRIMARY | Altra Industrial Motion Corp. (USA) |
| Reference | Meaning |
|---|---|
| CB57-42532 | D/9 Drawing number reference only U.S. Government activity |
NSN 3020-01-186-3591 is a Chain,roller, manufactured by Altra Industrial Motion Corp., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-186-3591 has 1 manufacturer part number on file: ASA40SL 43 LINKS (Altra Industrial Motion Corp.).
2 possible matches (shared part number, not a government interchangeability claim): 3020-01-186-3592, 3020-01-187-1210. Verify interchangeability with system specifications before substitution.
Key specifications for ASA40SL 43 LINKS: Second Chain Link Pin Nominal Diameter: 0.1560 INCHES IN; Second Chain Link Plate Nominal Thickness: 0.3120 INCHES IN; First Chain Link Roller Nominal Diameter: 0.3120 INCHES IN; Pin Overall Length: 0.6500 INCHES NOMINAL IN. 15 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.