XA12842P
Washer
SAF-Holland

This washer functions as a precise shimming and spacing element within fifth-wheel interfaces, ensuring accurate vertical clearance and load distribution between mating surfaces. By compensating for minor surface irregularities and wear, it preserves proper alignment of the kingpin planes, which is critical for stable coupling and even load transfer across the articulation range. The part is part of the Fifth Wheel family (category_id 42595) and is identified by VMRS code 053-007-008, which encompasses washers, spacers, and shims used in hitch assemblies. In practice, technicians apply the washer to restore proper pre-load conditions, reduce edge loading, and minimize bolt stretch over time. The material and thickness, selected to match OEM specifications, help extend service life of the plate-to-kingpin interface, maintain locking integrity, and improve the responsiveness of the release mechanism under dynamic road loads. Compatible with standard SAF-Holland fasteners and plate assemblies, it plays a subtle but essential role in overall system reliability and safe coupling operations.