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 |
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:
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High impact resistance
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Maximum wear resistance
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Optimum strength and fatigue resistance
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Ease of installation
