The Wacker Neuson Screw with Lockwasher is a genuine OEM fastener assembly designed for the HSH700 and HSH650 hydronic surface heaters. Sourced directly from Wacker Neuson, this part carries the same specifications as the hardware installed at the factory, ensuring a consistent and secure fit. The integrated lockwasher is pre-paired with the screw, so you get the complete fastener assembly as a single, ready-to-install unit. Whether you are performing routine maintenance or replacing damaged hardware on your HSH650 or HSH700, part number keeps the job straightforward.
Key Features
- Genuine OEM Fastener Integrity — Meets Wacker Neuson's torque and thread specification for this hardware position, so clamping force is consistent and connections stay secure.
- Pre-Paired Lockwasher Assembly — The lockwasher is supplied as part of the screw assembly, eliminating the need to source hardware separately and ensuring the correct washer type is used every time.
- Direct Drop-In Replacement — Engineered to the same thread form, length, and head geometry as the original, so it installs into existing threaded positions without modification.
- Confirmed Fitment for HSH Series Heaters — Verified for the HSH700 and HSH650 hydronic surface heaters, keeping compatibility clear before you order.
- Prevents Loosening Under Vibration and Heat Cycling — The lockwasher element resists fastener back-out in the thermal and mechanical conditions typical of hydronic heating equipment, protecting the integrity of the connection over repeated heat cycles.
A screw with lockwasher is a combined fastener assembly where the lockwasher works alongside the screw to maintain clamping force in applications subject to vibration, thermal expansion, or repeated cycling. On hydronic surface heaters like the HSH650 and HSH700, fasteners secure panels, hose fittings, and internal components that are regularly exposed to heat and operational movement. A worn, stripped, or missing fastener in these positions can allow components to shift or connections to loosen, potentially affecting heat output or causing fluid leaks. Using the correct OEM-specified hardware — part number 5000176639 — ensures the assembly performs as intended and that connections remain properly torqued throughout the equipment's service life.
Part Details
| Part Number | 5000176639 |
|---|---|
| Old Part Number | 0176639 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Screw with Lockwasher |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HSH700 | HSH700G | 5000620243 |
| HSH650 | HSH650 | 5000620991 |
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.
