The Multiquip 22538-001 is a genuine OEM Hex Flange Screw 1/4"-20 x.5 Thr Roll designed for G55H concrete vibrators and Whiteman walk-behind power trowel models including JS60C, JH90C, JH55C, BS90C, BH11C, and BH90C. As a direct Multiquip OEM part, it meets the exact thread pitch, flange diameter, and torque specification required by the original equipment. Sourcing the correct fastener for these assemblies matters — an incorrect thread form or flange profile can lead to loosening under vibration or damage to the mating surface. DHS Equipment supplies this part as a stocked replacement to keep your Multiquip equipment running as built.
Key Features
- Correct Thread Form and Flange Spec — Manufactured to the exact 1/4"-20 thread roll and flange diameter specified for Multiquip assemblies, ensuring full thread engagement without cross-threading or fastener movement.
- Genuine OEM Part — Sourced directly from Multiquip, this screw carries the same part number 22538-001 used in the original equipment build — no substitutions or approximations.
- Broad Multiquip Fitment — Confirmed fit across G55H vibrators and Whiteman walk-behind trowel models JS60C, JH90C, JH55C, BS90C, BH11C, and BH90C.
- Thread-Rolling Design for Vibration Resistance — The thread roll form creates a work-hardened mating thread that resists backing out under the continuous vibration loads generated by concrete equipment in active use.
- Hex Flange Head for Secure Clamping — The integrated flange distributes clamping load evenly across the joint face, eliminating the need for a separate washer and reducing the risk of surface damage on composite or cast housings.
A hex flange screw combines a standard hex-drive head with a built-in flanged washer base, allowing it to clamp two components together while spreading the bearing load over a wider surface area. In concrete vibrators and power trowels, fasteners like the 22538-001 are used in locations exposed to sustained vibration, making the thread-rolling design particularly important — rolled threads resist loosening more effectively than cut threads under cyclic loading. When this type of fastener is missing, stripped, or replaced with an incorrect grade or thread pitch, it can result in component misalignment, housing damage, or fastener failure during operation.
Part Details
| Part Number | 22538-001 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Hex Flange Screw 1/4"-20 x .5 Thr Roll |
Compatibility & Fitment
| Name | Model |
|---|---|
| Vibrators | G55H |
| Whiteman Walk-Behind Power Trowels | JS60C |
| Whiteman Walk-Behind Power Trowels | JH90C |
| Whiteman Walk-Behind Power Trowels | JH55C |
| Whiteman Walk-Behind Power Trowels | BS90C |
| Whiteman Walk-Behind Power Trowels | BH11C |
| Whiteman Walk-Behind Power Trowels | BH90C |
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.
