Wacker Neuson 5100075497 1/2-13x3/4 Hex Flange Screw

The Wacker Neuson 1/2-13x3/4 Hex Flange Screw is a genuine OEM fastener designed for the PDT3A, PDI3A, PDT2A, and PDI2A pump series. As a direct factory replacement, this screw is sourced straight from Wacker Neuson to ensure the correct thread specification, head geometry, and flange profile every time. It fits confirmed applications including the PDI3A Pump Diaphragm and PDI2A(I) Pump configurations. When you need a fastener you can trust to hold torque and maintain structural integrity in a working pump assembly, this is the correct part to order.

Key Features

• Correct Thread Engagement: — 1/2-13 UNC threading matches the original tapped holes in Wacker Neuson pump assemblies, ensuring full thread engagement without risk of cross-threading or stripping.
• Integrated Flange Design: — The built-in flange distributes clamping load evenly across the mating surface, eliminating the need for a separate washer and maintaining consistent joint pressure.
• Genuine OEM Part: — Manufactured to Wacker Neuson's original specifications, this fastener meets the same material grade and dimensional tolerances as the screw it replaces.
• Broad Pump Series Compatibility: — Fits PDT3A, PDI3A, PDI3A(I), PDT2A, and PDI2A(I) pump models, covering both diaphragm and standard pump configurations within these families.
• Maintains Assembly Integrity: — A loose, stripped, or incorrect fastener in a pump housing can allow covers and panels to shift under vibration, leading to misalignment or fluid ingress. Using the correct OEM screw keeps critical joints secure.

A hex flange screw combines a standard hex-head bolt with an integrated washer-like flange beneath the head. In pump and power equipment assemblies, these fasteners are used where consistent clamping force and vibration resistance are essential — the flange spreads the load over a wider surface area than a plain bolt head alone, reducing the risk of the joint loosening during operation. When this type of fastener wears, corrodes, or is replaced with an incorrect size, it can compromise the integrity of the housing joint, potentially allowing leaks, misalignment, or component movement that shortens the service life of surrounding parts.

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.

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