Back to product group

HOLLAND Double Spool Series

The HOLLAND Double Spool Kingpins are for OEM installation and aftermarket replacement, and are offered in American Association of Railroads (AAR) and non-AAR models.  

Product information

The HOLLAND Double Spool Kingpins when properly installed, meet or exceed the performance requirements of the AAR standard M-931, Truck and Trailer Manufacturers Association (TTMA) and the Society of Automotive Engineers (SAE). Non-AAR models when properly installed, meet or exceed the performance requirements of the TTMA and SAE. 

The Double Spool Kingpins feature: 

  • High impact resistance 

  • Maximum wear resistance 

  • Optimum strength and fatigue resistance 

  • Ease of installation 

Technical data
Material AAR: AISI 4320H and 4718H
Hardness AAR: 380-420 BHN
Material Non-AAR: AISI 8630H
Hardness Non-AAR: 302-363 BHN
Quality: 100% inspected for internal and external integrity
Literature
View all
Document Thumbnail
Flatbed Operation Products Sales Brochure
PDF / 1.32 MB
Document Thumbnail
Vocational Products Sales Brochure
PDF / 1.51 MB
Document Thumbnail
HOLLAND Kingpins Brochure
PDF / 2.16 MB
Interested? Get in contact.