Multiquip 1146 Screw FHS 5/16-18 x 1 Nyloc

The Multiquip 1146 Screw FHS 5/16-18 x 1 Nyloc is a genuine OEM fastener designed for a wide range of Multiquip and Whiteman ride-on and walk-behind power trowel models, including HHN, HTN, JWN, JRT, BRT, BHN, JTN, and B, BA, J, JA, C, and CA series machines. As a factory-original component, part 1146 meets the exact thread specification and locking requirements of the original hardware used in these machines. This screw is a direct-fit replacement that installs without any modification, ensuring a secure, vibration-resistant hold in the exact positions where it was originally applied. Sourced directly through authorized Multiquip distribution channels, DHS Equipment supplies this part to keep your concrete finishing equipment operating as designed.

Key Features

• Nyloc Locking Thread Retention — The nylon insert collar resists loosening under the constant vibration generated during concrete finishing operations, holding fastener torque more effectively than standard hex screws.
• Genuine OEM Specification — Manufactured to the original 5/16-18 x 1 thread pitch, diameter, and length spec, ensuring the screw seats and clamps correctly in factory-drilled locations without over- or under-engagement.
• Broad Trowel Family Coverage — A single part number that fits HHN, HTN, JWN, JRT, BRT, BHN, JTN, JTO, HRT, and multiple walk-behind series, making it a useful stock item for fleets running mixed Multiquip trowel lineups.
• Correct Flat Head Socket Drive Profile — The FHS (flat head socket) head style allows flush or countersunk installation in panel and guard locations where a protruding fastener head would interfere with machine operation or operator clearance.
• Maintains Structural Integrity of Critical Assemblies — Loose or incorrect fasteners in trowel guard, blade, and drive assemblies can lead to component misalignment or detachment during operation; using the correct OEM fastener maintains the clamping force these assemblies require.

The Multiquip 1146 is a flat head socket Nyloc screw used throughout the structural and mechanical assemblies of Multiquip and Whiteman power trowels. Its nylon locking insert grips the mating thread after installation, preventing the screw from backing out due to the vibration inherent in concrete finishing work. When this fastener is missing, damaged, or substituted with an incorrect thread pitch or head type, assemblies may shift or detach, compromising both machine performance and operator safety.

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.