Multiquip EM157 Screw Hex Head Cap 1/4-20 x 1/2

The Multiquip EM157 is a genuine OEM Screw Hex Head Cap 1/4-20 x 1/2 used across a broad range of Multiquip and Whiteman equipment, including rammers, plate compactors, ride-on and walk-behind trowels, power buggies, mixers, rollers, saws, pumps, generators, and screeds. As a genuine OEM component, EM157 is manufactured to the exact dimensions and grade specifications called out in Multiquip's original engineering documentation, ensuring consistent torque performance and proper clamping load. This screw appears on equipment families such as the MTX rammer series, MVC and MVH plate compactor series, HHN and HTN ride-on trowels, WM70 Whiteman mixers, WTB and WBH power buggies, AR roller series, and many more. Keeping a supply of EM157 on hand helps ensure that routine maintenance and field repairs on any of these machines are never held up by a missing fastener.

Key Features

• Genuine OEM Grade Fastener — Manufactured to the exact thread spec, head geometry, and tensile grade Multiquip engineers selected for these assemblies, so clamping load and torque values remain consistent with original design intent.
• 1/4-20 x 1/2 Unified Coarse Thread — Standard UNC thread form mates cleanly with existing threaded holes and nuts throughout the machine without chasing or re-tapping, keeping installation straightforward.
• Broad Cross-Equipment Fitment — A single part number covers applications across MTX rammers, MVC and MVH plate compactors, HHN and HTN ride-on trowels, WM70 mixers, WTB and WBH power buggies, AR rollers, MP masonry saws, and multiple generator and pump models.
• Structural Integrity Where It Counts — A correctly torqued hex head cap screw maintains cover, guard, and bracket alignment under vibration-heavy operating conditions; a loose or incorrect fastener risks component shift or detachment during operation.
• Hex Drive for Positive Wrench Engagement — The six-sided head allows use of standard combination wrenches or sockets, making installation and removal quick in tight spaces common on compact equipment.

A hex head cap screw is a fully threaded or partially threaded fastener with a six-sided head designed to be driven by a wrench or socket. In construction equipment, cap screws serve as primary structural fasteners securing covers, guards, brackets, engine mounts, handle assemblies, and other critical components. The 1/4-20 designation refers to a 1/4-inch nominal diameter with 20 threads per inch on a unified coarse thread form, which provides good resistance to loosening under vibration — an important characteristic in compaction, mixing, and cutting equipment. When a cap screw is missing, stripped, or replaced with an incorrect grade or length, it can compromise the clamping force of the joint, allow components to shift under load, and potentially create a safety hazard for the operator or damage adjacent parts.

For fitment questions or to confirm EM157 is correct for your specific machine, contact the DHS Equipment team before ordering.

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.