A knuckle pin holds the knuckle into the coupler when the knuckle is in the open position.
Welcome! We’re still working on building this site out, but in the meantime please explore the railroad dictionary and other references we’re building.
If you have any suggestions, please let us know!
Also check out the new online catalog of freight car parts over at FreightParts.com
Below are a few random samples content from this site.
The rules governing the interchange of freight cars among all freight railroads, interchange freight car owners, and running repair agents (collectively “subscribers“).
These rules of freight cars in North America are divided into two manuals – the Field Manual and the Office Manual. There are additional specifications and standards that apply to the manufacture and repair of freight car components in the AAR Manual of Standards and Recommended Practices (MSRP).
The interchange of cars between railroads without mechanical inspection at the interchange point, which would provide the opportunity to reject defective equipment back to the providing road.