Wacker Neuson 5000163950 Carriage Bolt M8X25 Bz 8.8

The Wacker Neuson is a genuine OEM Carriage Bolt M8X25 Bz 8.8 designed for a broad range of Wacker Neuson tandem rollers and remote-controlled trench rollers, including the RD12, RD12A, RD16, and RD27 series tandem rollers as well as the RTLx-SC3 and RTKx-SC3 trench roller families. As a direct OEM replacement, this fastener is manufactured to the exact grade 8.8 specification called out by Wacker Neuson engineering, ensuring the correct clamping load and shear resistance for the application. The M8x25 carriage bolt profile — with its domed head and square neck — self-locks on installation, eliminating the need for a second tool to hold the fastener while the nut is driven. Keeping critical structural fasteners at spec is essential on compaction equipment subject to continuous vibration loads.

Key Features

• Grade 8.8 Tensile Rating: — Manufactured to DIN/ISO grade 8.8 specification, providing the tensile strength and proof load required for structural fastener positions on vibratory rollers operating under sustained dynamic loads.
• Self-Locking Carriage Profile: — The square-neck shoulder seats directly into the mounting surface, preventing rotation during tightening and delivering consistent torque-to-clamp performance without a backup wrench.
• Broad Roller and Trench Roller Fitment: — Verified fitment across RD12, RD12A, RD16, and RD27 tandem roller variants and RTLx-SC3 and RTKx-SC3 remote-controlled trench roller lines, covering a wide range of Wacker Neuson compaction equipment.
• Genuine OEM Part: — Sourced directly from Wacker Neuson, this fastener matches the original material grade, plating, and dimensional tolerances specified for the assembly, so it installs and performs exactly as the factory intended.
• Vibration-Environment Durability: — Fasteners on vibratory compaction equipment are exposed to constant cyclic stress. Using the correct grade and geometry prevents fatigue loosening, panel movement, and structural misalignment over the service life of the machine.

A carriage bolt is a specialized fastener with a smooth, rounded head and a square shank section directly beneath it. When driven into a correspondingly shaped hole, the square neck bites into the material and prevents the bolt from spinning as the nut is tightened, making it well suited to panel and frame assembly points where access is limited to one side. On vibratory compaction equipment such as tandem rollers and trench rollers, fasteners throughout the frame and cover assemblies are subjected to continuous vibration and dynamic loading during operation. A fastener that is the wrong grade, wrong length, or has loosened due to wear can allow panels to shift, create structural play, or cause progressive damage to the assembly it secures — making like-for-like OEM replacement the straightforward choice when servicing these machines.

Part Details

Compatibility & Fitment

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Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

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