Wacker Neuson 5000174692 Shoulder Screw M10X25Mm Cl12.9

The Wacker Neuson is a genuine OEM Shoulder Screw M10X25Mm Cl12.9 designed for the CT36 and CT48 series walk-behind concrete power trowels. Sourced directly from Wacker Neuson, this fastener is produced to the exact material grade and dimensional tolerances specified for these machines. It is confirmed to fit a wide range of CT36 and CT48 models, including the CT36-5A, CT36-6, CT36-8A, CT36-9, CT36-9-V, CT36-400E, CT36-X, CT48-8A, CT48-9, CT48-11A, CT48-13A-V, and associated variant configurations. Selecting the correct class 12.9 shoulder screw ensures the fastener performs as engineered and holds up under the high-cycle vibration loads typical of power trowel operation.

Key Features

• Class 12.9 High-Strength Fastener — The Cl12.9 designation means this screw is manufactured from alloy steel heat-treated to one of the highest tensile and proof-load ratings in the metric fastener standard — critical where a fastener must resist shear and vibration simultaneously.
• Exact M10X25Mm Shoulder Geometry — The precision-ground shoulder diameter and length must match the bearing or clearance hole it seats in; this genuine OEM piece maintains the tolerances needed for a flush, wobble-free installation without shimming or modification.
• Genuine Wacker Neuson OEM Part — Manufactured to the same specification as the original hardware, ensuring consistent hardness, surface finish, and thread form across the full shoulder and threaded section.
• Broad CT-Series Compatibility — Verified fitment across CT36 and CT48 power trowel models, covering 36-inch and 48-inch walk-behind configurations in both standard and variant builds.
• Vibration-Resistant Performance — Power trowels subject fasteners to continuous cyclic loading; a worn, under-spec, or incorrect-grade screw in this position can cause loosening, accelerated wear on mating components, or structural play in the trowel assembly.

A shoulder screw differs from a standard hex bolt in that it features a precisely machined unthreaded shank — the shoulder — that acts as a pivot, spacer, or bearing surface within an assembly. In walk-behind concrete power trowels, shoulder screws are commonly used at pivot and linkage points where a controlled clearance or rotating fit is required, rather than a fully clamped joint. When a shoulder screw wears, deforms, or is replaced with an incorrect grade or dimension, it can introduce unwanted play into the assembly, cause premature wear on surrounding components, and ultimately compromise the smooth, controlled operation of the trowel head.

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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