The Multiquip 915105 is a genuine OEM Hex Head Cap Screw 3/8-16 x 1.0 Grade 8 designed for Whiteman ride-on power trowel models STX55Y6, HTX44K5, HTX44K4, and STX55J6. As a factory-sourced fastener, 915105 meets the exact torque and load specifications required by these machines, ensuring every fastened joint holds to the same standard as when the trowel left the factory floor. Sourced directly through Multiquip's OEM supply chain, this screw is a straight drop-in replacement that requires no rework or substitution guesswork. DHS Equipment stocks genuine Multiquip hardware so you can get your trowel back in service without compromise.
Key Features
- Grade 8 Tensile Strength — Heat-treated to Grade 8 specification, this fastener delivers the high clamping force and shear resistance demanded by rotating trowel assemblies under continuous load.
- Exact Thread and Length Match — 3/8-16 thread pitch and 1.0-inch grip length match the original mounting positions on STX and HTX series trowels, so the screw seats and torques correctly the first time.
- Genuine OEM Part — Supplied directly through Multiquip's OEM parts program, 915105 carries the same material and dimensional standards as the hardware installed at the assembly plant.
- Broad STX and HTX Series Coverage — A single part number covers STX55Y6, STX55J6, HTX44K5, and HTX44K4 ride-on trowels, making it a reliable stock item for fleets running multiple Whiteman hydrostatic models.
- Structural Integrity Under Vibration — Trowel machines run under sustained vibration; an undersized or incorrect-grade fastener can back out or shear. Grade 8 hardness resists the cyclic stress these machines produce during finishing operations.
A hex head cap screw is a high-strength threaded fastener used to clamp structural and mechanical components together in a fixed, load-bearing joint. In ride-on power trowels, hardware like the 915105 secures critical assemblies — including drive, frame, and blade guard components — where fastener failure under vibration or torque could affect both machine function and operator safety. Using the correct grade and dimensional specification matters because substituting a lower-grade or incorrectly sized fastener can result in joint loosening, component misalignment, or fastener failure during operation.
For questions about fitment or to confirm compatibility with your specific machine serial range, contact the DHS Equipment parts team directly.
Part Details
| Part Number | 915105 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Hex Head Cap Screw 3/8-16 x 1.0 Grade 8 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | STX55Y6 |
| Whiteman Ride-On Power Trowels | HTX44K5 |
| Whiteman Ride-On Power Trowels | HTX44K4 |
| Whiteman Ride-On Power Trowels | STX55J6 |
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.
