Multiquip 5051 HHC Screw 5/16-18 x 1-3/4 G5

The Multiquip 5051 is a genuine OEM HHC Screw 5/16-18 x 1-3/4 G5 designed for use across a wide range of Multiquip, Whiteman, Essick, and Mayco equipment including WM45H, WM63, LS300, MVH308DZ, MVH408DZ, WBH series power buggies, and R2000H and RW series rollers. As a genuine OEM fastener, this screw is manufactured to the exact thread pitch, head dimensions, and Grade 5 strength specification called out in Multiquip's engineering documentation. Sourced directly through authorized distribution channels, part number 5051 ensures you are installing the correct fastener the first time — no guesswork on thread count, grip length, or tensile rating. DHS Equipment stocks this part to keep your Multiquip fleet running without unnecessary delays.

Key Features

• Grade 5 Tensile Strength — Heat-treated to meet Grade 5 standards, delivering the clamping load and shear resistance required for structural and mechanical joint applications on heavy equipment.
• Exact Thread Specification — 5/16-18 Unified National Coarse thread form matches OEM-tapped holes precisely, threading in fully by hand before torquing — no chasing or re-tapping required.
• Correct 1-3/4 Inch Grip Length — The specified shank length ensures proper thread engagement and correct clamping stack-up across the joint, preventing under-engagement that can lead to fastener loosening or failure.
• Broad Cross-Equipment Compatibility — A single verified part number covering Whiteman mortar mixers (WM45H, WM63 series), Essick mixers (EM70P/S, EM90P/S), Mayco and LS-series concrete pumps, MVH plate compactors, WBH power buggies, and R2000H and RW rollers.
• Genuine OEM Source Integrity — Supplied through Multiquip's authorized parts network, this fastener meets the same material and dimensional standards as the hardware originally installed at the factory.

A hex head cap (HHC) screw is a standard structural fastener used throughout heavy construction equipment to secure covers, guards, housings, frames, and mechanical assemblies. The 5/16-18 designation specifies the major thread diameter and coarse thread pitch, while the 1-3/4 inch length determines how much shank engages through the joint stack. Grade 5 indicates a medium-carbon steel fastener that has been quenched and tempered to achieve defined proof load and minimum tensile strength values — making it suitable for joints that experience vibration, dynamic loading, or repeated service cycles. When a fastener of this type stretches, strips, or is replaced with an incorrect grade or length, joint integrity is compromised, which can result in loosened assemblies, accelerated wear on mating components, or structural failure of the fastened connection.

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.