The Multiquip AO100250100 is a genuine OEM Screw 1/4" x 1" Hex and LW SDP-2 designed for the STOW SDP-2 diaphragm pump. As a factory-sourced fastener, it delivers the exact thread pitch, head dimensions, and lock washer specification required for correct reassembly on SDP-2 series equipment. Sourced directly through Multiquip's OEM supply chain, this part ensures a secure, properly torqued connection wherever it is applied on the machine. If you're servicing or rebuilding an SDP-2 diaphragm pump, using the correct OEM hardware eliminates the guesswork of matching aftermarket fasteners.
Key Features
- OEM-Spec Fastener Construction — Manufactured to the exact thread, length, and head-type specifications called out in the SDP-2 service documentation, ensuring correct clamping force and secure assembly.
- Integrated Lock Washer Design — The included lock washer (LW) is matched to this screw's diameter and head style, providing vibration-resistant retention under the demanding operating conditions of a diaphragm pump.
- Direct Replacement for SDP-2 — Engineered specifically for the STOW SDP-2 diaphragm pump; drops into position exactly as the original hardware did with no fitting or modification.
- Supports Leak-Free Reassembly — Correct fastener torque is critical on diaphragm pump housings and covers; using the properly sized OEM screw helps prevent fluid leaks and housing distortion during reassembly.
- Genuine Multiquip OEM Part — Supplied under part number AO100250100 through Multiquip's authorized parts network, confirming this is the same hardware used in original production.
A hex screw paired with a lock washer is a critical fastener used throughout diaphragm pump assemblies to secure covers, housings, and internal components that must remain tightly sealed under pressure and continuous vibration. On a diaphragm pump like the SDP-2, loose or incorrect fasteners can allow housing panels to shift, leading to fluid leaks, loss of prime, or accelerated wear on the diaphragm itself. Using the correct OEM fastener — with the right thread engagement and a properly rated lock washer — ensures that every bolted joint holds under operating loads and keeps the pump performing as intended.
For questions about fitment or to confirm this part is correct for your SDP-2 diaphragm pump, contact the DHS Equipment parts team for assistance.
Part Details
| Part Number | AO100250100 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Screw 1/4" x 1" Hex and LW SDP-2 |
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.
