Multiquip 0786 BHC 1/4-20 X 3/8 Nyl Patch Screw

The Multiquip 0786 BHC 1/4-20 X 3/8 Nyl Patch Screw is a genuine OEM fastener designed for a wide range of Multiquip and Whiteman walk-behind and ride-on power trowels. As a factory-sourced component, part 0786 delivers the correct thread specification, head geometry, and nylon patch retention needed to keep assemblies properly secured under the vibration and stress of concrete finishing work. This screw is confirmed to fit numerous trowel series including J36, JA, B46, BA, C, CA, HDA, JS36, BS46, and PRO series machines, among others.

Key Features

• Genuine OEM Thread Integrity — Sourced directly from Multiquip, this fastener meets the exact 1/4-20 thread specification required for secure assembly without stripping or cross-threading.
• Nylon Patch Locking Feature — The integrated nylon patch provides vibration-resistant thread locking, preventing loosening during the continuous mechanical movement of trowel operation.
• Button Head Cap (BHC) Profile — The low-profile button head sits flush in recessed mounting locations, maintaining clearance where standard hex heads would interfere.
• Broad Trowel Series Compatibility — Fits J, JA, B, BA, C, CA, HDA, JS, BS, and PRO series walk-behind trowels, plus select ride-on trowel models, making it a versatile stock item for mixed fleets.
• Direct-Fit Replacement — Matches the original fastener dimensions exactly, dropping into existing threaded locations without modification to the surrounding hardware or panels.

A button head cap screw with a nylon patch is a threaded fastener designed to clamp components together while resisting self-loosening caused by vibration. The nylon patch — a strip of nylon material bonded to a portion of the threads — creates friction against mating threads, acting as a prevailing-torque locking mechanism that holds torque without the need for a separate lock washer or thread-locking compound. On power trowels, where engine vibration and blade rotation subject hardware to constant cyclical stress, fasteners without adequate locking features can work loose over time, leading to misaligned guards, loose housings, or unsecured panels that affect operator safety and machine performance. Replacing worn or missing screws with the correct Multiquip 0786 restores the assembly to its designed clamping force and locking integrity.

Part Details

Compatibility & Fitment

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.