Wacker Neuson 5100075498 1/2-13x2-1/4 Hex Head Bolt Grade 5

The Wacker Neuson 1/2-13x2-1/4 Hex Head Bolt Grade 5 is a genuine OEM fastener designed for PDT3A, PDI3A, PDT2A, and PDI2A series diaphragm pumps. Sourced directly from Wacker Neuson, this bolt meets the exact material and dimensional standards specified for these machines. If you're servicing a pump diaphragm assembly or completing a structural repair on a compatible unit, part ensures the correct torque capacity and thread engagement every time.

Key Features

• Grade 5 Tensile Strength — Meets the minimum proof load and tensile requirements of a Grade 5 fastener, providing the clamping force needed to keep pump assemblies securely seated under load.
• Exact Thread Specification — 1/2-13 UNC thread form and 2-1/4 inch length match the original hardware spec, threading directly into existing holes without recutting or chasing.
• Genuine OEM Part — Supplied by Wacker Neuson as an authorized replacement, ensuring material grade, finish, and dimensional tolerance align with what left the factory.
• Broad Pump Series Coverage — Confirmed fitment across PDT3A, PDI3A, PDI3A(I) Pump Diaphragm, PDT2A, and PDI2A(I) Pump models — one bolt number covers multiple units in your fleet.
• Correct Clamping Integrity — An undersized or incorrect-grade bolt in a pump housing can back out under vibration or strip under torque; the correct grade and length eliminates both failure modes.

A hex head bolt in a diaphragm pump assembly does more than hold parts together — it maintains the compression and alignment that allow the pump housing, diaphragm, and valve components to function as a sealed unit. When a bolt is the wrong grade, length, or thread pitch, it can fail to achieve proper clamping torque, leading to leaks, misalignment, or mechanical loosening during operation. Using the correct OEM-specified fastener like the Wacker Neuson 5100075498 ensures the assembly stays tight and properly loaded through the full service cycle of the pump.

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.