The Wacker Neuson Screw HHC GR5 1/4-20 x 3/4 is a genuine OEM fastener designed for the PDT3A, PDI3A, PDI3A(I) Pump Diaphragm, PDT2A, and PDI2A(I) Pump series diaphragm pumps. Sourced directly from Wacker Neuson, this is the exact screw specified for these machines — same grade, same thread pitch, same dimensions as what left the factory. Fitting the correct Grade 5 hex head cap screw ensures structural joints and critical fastening points are held to the torque and clamping force these pumps demand.
Key Features
- Grade 5 Tensile Strength — GR5 rating delivers the clamping force and shear resistance required at pump assembly joints, where an under-spec fastener can loosen under vibration or hydraulic pressure cycling.
- Exact Thread and Length Specification — 1/4-20 UNC thread form at 3/4 in. length matches the tapped holes in the pump housing directly, so the screw seats and torques correctly without modification.
- Genuine Wacker Neuson OEM Part — Manufactured to Wacker Neuson's own tolerances for hex head cap screws used in diaphragm pump assemblies, ensuring consistent thread engagement and head seating across service intervals.
- Broad Diaphragm Pump Compatibility — Confirmed fitment across the PDT3A, PDI3A, PDI3A(I) Pump Diaphragm, PDT2A, and PDI2A(I) Pump models, covering multiple pump sizes and configurations in the Wacker Neuson diaphragm pump range.
- Maintains Pump Integrity Under Load — A worn, stripped, or incorrect fastener at a pump joint allows deflection and leakage at high cycle rates. Using the correct OEM screw keeps mating surfaces clamped and sealed as designed.
A hex head cap screw like the 5200025767 secures structural and assembly joints throughout a diaphragm pump, holding housing sections, diaphragm plates, and component mounts in fixed alignment under continuous mechanical stress and pressure cycling. When a fastener stretches, strips, or is replaced with an incorrect grade or length, the joint loses clamping load — leading to misalignment, vibration fatigue, and potential fluid ingress. Using the OEM-specified Grade 5 screw at the correct 1/4-20 x 3/4 dimension restores the fastening point to its designed specification and protects the surrounding pump components from the wear that follows a loose or failed joint.
Part Details
| Part Number | 5200025767 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Screw HHC GR5 1/4-20 x 3/4 |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| PDT3A | PDT3A | 5100075507 |
| PDI3A | PDI3A | 5100075508 |
| PDI3A(I) PUMP DIAPHRAGM | PDI3A(I) | 5100075509 |
| PDT2A | PDT2A | 5100075510 |
| PDI2A(I) PUMP | PDI2A(I) | 5100075511 |
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.
