Multiquip 22021 Hex Flange Screw M8-1.25 x 20mm GR10.9

The Multiquip 22021 is a genuine OEM Hex Flange Screw M8-1.25 x 20mm GR10.9 designed for Multiquip and Whiteman ride-on power trowel and light tower equipment. As a direct OEM replacement, part 22021 meets the exact dimensional and strength specifications required by the original design. Compatible across a wide range of models including the PRX, HHN, HTX, HTN, JWN, and LT6K series, this fastener is the correct choice when servicing these machines. Ordering genuine Multiquip parts ensures your equipment is restored with components built to the same standard as the original build.

Key Features

• Grade 10.9 High-Strength Steel — The GR10.9 rating delivers the clamping force and shear resistance required for structural and mechanical fastening points on ride-on trowel frames and assemblies.
• Integrated Flange Design — The hex flange head distributes clamping load across a wider bearing surface, reducing the need for a separate washer and providing a secure, stable seating against mating components.
• Genuine OEM Part — Sourced directly from Multiquip, part number 22021 matches the original fastener specification for thread pitch (M8-1.25) and grip length (20mm) with no guesswork on sizing.
• Broad Trowel Series Compatibility — Fits PRX hybrid trowels, HHN and HTX hydrostatic series, HTN and JWN mechanical trowels, and select LT6K light tower models — one part number covering a wide service range.
• Correct Torque Integrity — Using the right grade fastener in load-bearing locations preserves the designed clamping torque values, preventing joint loosening under the continuous vibration typical of concrete finishing equipment.

A hex flange screw combines a standard hex-drive bolt head with a built-in flanged washer base, allowing it to clamp components securely without requiring a loose washer beneath the head. The M8-1.25 x 20mm specification defines the thread diameter, pitch, and grip length — all three values must match exactly for the fastener to seat correctly and achieve the intended clamping load. On ride-on trowels and light towers, fasteners at this grade are used in locations subject to sustained vibration and mechanical stress, meaning an incorrect grade or thread pitch can result in joint failure, component loosening, or structural damage over time. Replacing worn or damaged hardware with the correct Multiquip 22021 restores the assembly to its original 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.