The Multiquip F620037 is a genuine OEM Lockwasher 3/8 designed for the SDP-2 diaphragm pump. As a factory-sourced replacement, it meets the original engineering specifications set for this equipment. This part is a direct replacement for the SDP-2, ensuring a proper fit without any guesswork. DHS Equipment stocks this genuine Multiquip component so you can get your pump back in service fast.
Key Features
- Genuine OEM Hardness and Temper — Manufactured to the exact material hardness and spring tension spec required for secure fastener retention on the SDP-2 pump assembly.
- Drop-In Replacement — Sized to 3/8 inch to seat correctly on the existing fastener stack without modification, maintaining proper clamp load throughout the assembly.
- SDP-2 Compatibility — Confirmed fitment for the STOW SDP-2 diaphragm pump, so you can order with confidence.
- Prevents Fastener Loosening — A failed or worn lockwasher allows bolts to back out under vibration, risking leaks, misalignment, or structural failure in the pump assembly. This replacement restores that critical holding force.
- Corrosion-Resistant Construction — Built to withstand the wet, chemically active environments common in diaphragm pump applications, helping the fastener assembly stay secure over repeated service cycles.
A lockwasher is a hardened, tensioned ring placed beneath a bolt or nut to resist loosening caused by vibration and dynamic loads. In a diaphragm pump like the SDP-2, constant reciprocating motion creates significant vibration that can gradually back out fasteners — leading to fluid leaks, component misalignment, or pump failure. Replacing a worn or damaged lockwasher restores the clamping integrity of the fastener joint and keeps critical components securely seated during operation.
Part Details
| Part Number | F620037 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Lockwasher 3/8 |
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.
