Multiquip 13287 Lock Nut 8-32

The Multiquip 13287 is a genuine OEM Lock Nut 8-32 designed for a broad range of Multiquip, Whiteman, and Essick equipment including ride-on power trowels, concrete mixers, mortar mixers, and light towers. As an authentic OEM component, 13287 is manufactured to the same specifications as the hardware originally installed at the factory, ensuring a correct fit across all listed machine families. Compatible models include STX55, HTX44, LD60, MD80, PRX, MC44S, MC64, MC94, WM63, WM70, WM90, WM120, EM70, EM90, EM120, and MLT25DCA series equipment. Sourcing the correct hardware like this lock nut helps maintain the structural integrity of fastened assemblies and avoids the vibration-related loosening that can develop when incorrect thread sizes are used.

Key Features

• OEM-Grade Thread Integrity — Manufactured to the exact 8-32 thread specification, ensuring proper torque retention and thread engagement in every application.
• Drop-In Installation — Matches the original hardware profile, threading directly into existing fastener points without rework or adaptation.
• Broad Multiquip Fitment — Verified for STX55, HTX44, LD60, MD80, PRX, WM, EM, and MC series machines covering ride-on trowels, concrete mixers, mortar mixers, and light towers.
• Vibration-Resistant Locking — Lock nut design resists self-loosening under the sustained mechanical vibration typical of trowels, mixers, and compaction equipment, keeping assemblies secure through heavy use cycles.
• Genuine OEM Part — Sourced directly from Multiquip, so the thread pitch, material grade, and locking element meet the same standard as the original hardware on the production line.

A lock nut is a fastener engineered to resist loosening caused by vibration, torque fluctuation, and dynamic loading — conditions that are constant on construction equipment like ride-on trowels, mixers, and light towers. Unlike a standard nut, the locking mechanism — whether a nylon insert, a distorted thread profile, or a crimped flange — creates additional friction that prevents the nut from backing off over time. When a lock nut wears out, strips, or is replaced with an incorrect size, the joint it secures can work loose, leading to component misalignment, accelerated wear on surrounding parts, or outright mechanical failure. Using the correct OEM-spec 13287 Lock Nut 8-32 maintains the clamping force the original design depends on.

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.