The Link,roller Chain, cataloged under National Stock Number 3020-01-548-4374, 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 The Boeing Company Div Commercial. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-548-4374 |
| Primary Part Number | 50-5560-48 |
| Item Name | Link,roller Chain |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | The Boeing Company Div Commercial |
| Status | ACTIVE |
| Nominal Pitch Distance | 0.375 INCHES IN |
| Pin Fastening Method | COTTER PIN |
| 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 |
|---|---|
| 50-5560-48 PRIMARY | The Boeing Company Div Commercial (USA) |
| Reference | Meaning |
|---|---|
| 50-5560-48 | 5/9 Secondary reference U.S. Government activity |
NSN 3020-01-548-4374 is a Link,roller Chain, manufactured by The Boeing Company Div Commercial, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-548-4374 has 1 manufacturer part number on file: 50-5560-48 (The Boeing Company Div Commercial).
Key specifications for 50-5560-48: Nominal Pitch Distance: 0.375 INCHES IN; Pin Fastening Method: COTTER PIN; Special Features: MADE FROM MS80052972;ROLLERLESS CHAIN, AMERICAN STD NO. 35;DRILLED WITH .067-.071 DIA HOLES FOR COTTER PINS;APPLY SAE 30 OIL TO LIGHTLY LUBRICATE CHAIN PER BAC 5008; Part Name Assigned by Controlling Agency: REPLACEMENT CONNECTING LINK. 2 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.