Wacker Neuson 5000020557 Hexagonal Head Cap Screw

The Wacker Neuson is a genuine OEM Hexagonal Head Cap Screw designed for a wide range of Wacker Neuson equipment, including CT and CRT concrete trowels, PT and PD centrifugal and diaphragm pumps, and B-series gasoline power units for internal vibrators. As a factory-sourced fastener, matches the exact thread specification, head geometry, and material grade called out in the original Wacker Neuson parts documentation. This screw appears across multiple assemblies and machine families, so using the correct OEM part ensures consistent clamping force and dimensional fit throughout the equipment's service life.

Key Features

• Exact Thread and Head Geometry: — Manufactured to the precise hexagonal head profile and thread spec used across Wacker Neuson's trowel, pump, and power unit assemblies — no recutting or chasing required on installation.
• Genuine OEM Sourcing: — Sourced directly through Wacker Neuson's authorized parts network, ensuring the correct grade and hardness rating for the torque loads these assemblies demand.
• Broad Cross-Family Fitment: — A single part number confirmed across CT and CRT walk-behind and ride-on trowels, PT2B and PT3B centrifugal trash pumps, PD and PDT diaphragm pumps, PDI models, and B 3000/B 5000 gasoline power units.
• Structural Integrity at the Joint: — A correctly spec'd cap screw maintains proper preload at critical connection points; a substitute of the wrong grade or thread pitch can lead to fastener failure, loosening under vibration, or component misalignment.
• Torque-Critical Application Compliance: — In trowel and pump assemblies subject to continuous vibration and mechanical load, using the OEM-specified fastener grade is essential to maintaining joint integrity and preventing hardware-related failures in the field.

A hexagonal head cap screw is a precision fastener used to clamp and secure structural and mechanical components together within an assembly. The hexagonal head allows a wrench or socket to apply controlled torque, compressing the joint to a specified clamping load. In vibration-intensive equipment like concrete trowels and trash pumps, fasteners are under constant dynamic stress, and a screw of the wrong thread pitch, shank diameter, or material grade can work loose, strip, or fracture — leading to component movement, accelerated wear on mating parts, or unexpected mechanical failure. Using the correct OEM part number ensures the fastener performs exactly as the original design requires.

Part Details

Compatibility & Fitment

Verify Before You Order

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

Why Buy From DHS Equipment

Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.

Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.