The Multiquip F620031 Lock Washer 5/16" is a genuine OEM component designed for the SDP-2 STOW Diaphragm Pump. Sourced directly from Multiquip, this lock washer meets the exact specifications required for proper assembly and secure fastening on SDP-2 series equipment. Keeping the correct hardware in place ensures your pump stays properly torqued and leak-free during demanding pumping operations.
Key Features
- Genuine OEM Hardness and Temper — Manufactured to the exact material grade and spring tension spec required for secure fastener locking in diaphragm pump assemblies.
- Direct Bolt-On Fit — Sized precisely at 5/16" to drop straight onto the correct fastener without adjustment, ensuring proper seating and bite against mating surfaces.
- Confirmed SDP-2 Fitment — Verified for use on the SDP-2 STOW Diaphragm Pump, so you can order with confidence.
- Prevents Fastener Backout — The lock washer's split design bites into both the fastener and the mating surface, resisting loosening caused by pump vibration during continuous operation.
- Critical Assembly Hardware — Using the correct OEM lock washer ensures torque values hold as intended, protecting surrounding components from movement, wear, and premature failure.
A lock washer is a small but essential piece of fastener hardware that prevents bolts and screws from loosening under vibration and operational stress. In a diaphragm pump like the SDP-2, where continuous mechanical cycling creates persistent vibration, even minor fastener movement can lead to leaks, misalignment, or component damage. Using the correct OEM-spec lock washer — properly sized and correctly tempered — ensures fasteners stay at their intended torque throughout the service life of the assembly.
For questions about fitment or ordering, contact the DHS Equipment team directly.
Part Details
| Part Number | F620031 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Lock Washer 5/16" |
Compatibility & Fitment
| Name | Model |
|---|---|
| STOW Diaphragm Pumps | SDP-2 |
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.
