The Multiquip 753430012-01 -01 Lock Washer M12 is a genuine OEM fastening component designed for ST41230, ST41460, ST61230, and ST61460 submersible pumps. As a direct Multiquip OEM part, it meets the original design specifications these pumps were built with, ensuring proper clamping force and thread retention at every service point. If you are maintaining or rebuilding a Multiquip submersible pump in the ST4 or ST6 series, this is the correct lock washer for the job.
Key Features
- Genuine OEM Hardness and Temper — engineered to the same material grade and spring tension as the original, maintaining proper preload on fastened joints in pump assemblies.
- Drop-In M12 Fitment — sized and formed to seat correctly on M12 fasteners without secondary fitting or modification, making service work straightforward and consistent.
- Confirmed Compatibility — verified for ST41230, ST41460, ST61230, and ST61460 Multiquip submersible pumps, covering both the ST4 and ST6 displacement classes.
- Prevents Fastener Loosening Under Vibration — submersible pumps operate in demanding wet environments with continuous motor vibration; a correctly tensioned lock washer keeps critical fasteners from backing out during operation.
- Correct for Wet-Environment Service — used in a submersible application, the material specification of this OEM washer is appropriate for the corrosive and moisture-heavy conditions these pumps are exposed to.
A lock washer is a hardened fastening component placed under a bolt or nut to resist loosening caused by vibration, torque cycling, or dynamic loads. In a submersible pump, fasteners are subjected to constant motor vibration and the added stress of operating submerged, where loosening can compromise housing integrity or allow water ingress into sealed sections. When a lock washer loses its spring tension, deforms, or is missing entirely, fasteners may back out over time, leading to leaks, misalignment, or component separation. Using the correct OEM-specification washer ensures the joint maintains its designed clamping load throughout the service life of the pump.
For questions about fitment or to confirm this is the right part for your application, contact the DHS Equipment team.
Part Details
| Part Number | 753430012-01 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Lock Washer M12 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Submersible Pumps | ST41230/ST41460 |
| Submersible Pumps | ST61230/ST61460 |
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.
