Multiquip 16629 Nyloc Nut 1/2-13 Grade 8

The Multiquip 16629 Nyloc Nut 1/2-13 Grade 8 is a genuine OEM fastener designed for WRS5200, WRS5200DFPU, WRSPUDF, MLT25DCA, WSHE-A Series, HHXD5, HHXD5-ES, HHXDF4-DF5, and HHXG5 equipment. As a direct OEM replacement, part 16629 delivers the exact thread specification, grade rating, and nylon locking insert required by Multiquip engineering — no guesswork, no substitution. Sourced directly from Multiquip, this fastener ensures you are installing the correct hardware the first time. DHS Equipment stocks genuine Multiquip parts so you can get your machine back in service quickly.

Key Features

• Grade 8 Rated Fastener — High-strength Grade 8 construction provides the clamping force and torque resistance demanded by heavy-duty construction equipment applications.
• Nylon Locking Insert — The integrated nylon collar grips the bolt thread under vibration, preventing self-loosening in dynamic operating environments like roller screeds and ride-on trowels.
• Exact 1/2-13 Thread Specification — Matches the OEM thread pitch and diameter precisely, seating flush and torquing correctly without modification to mating hardware.
• Wide Cross-Equipment Fitment — Confirmed fit across WRS5200 roller screeds, MLT25DCA light towers, WSHE-A vibratory screeds, and HHXD5, HHXD5-ES, HHXDF4-DF5, and HHXG5 ride-on trowels.
• Genuine OEM Part — Part number 16629 is a factory Multiquip component, ensuring correct material grade, plating, and dimensional tolerances are met as originally specified.

A nyloc nut is a standard hex nut with a nylon insert bonded into the top of the nut. When threaded onto a bolt, the nylon collar deforms around the thread profile, creating resistance that prevents the nut from backing off under vibration or cyclic loading. This makes nyloc nuts the preferred fastener choice for structural and mechanical joints on equipment that operates under constant vibration, such as screeds, trowels, and light towers. When a nyloc nut is reused beyond its service life or substituted with an incorrect grade, the locking insert loses effectiveness and the joint can work loose — leading to component misalignment, accelerated wear, or fastener failure in service. Replacing with the correct OEM-specified part, like Multiquip 16629, maintains the integrity of the joint as originally designed.

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.