The Multiquip EM968266 is a genuine OEM Jam Nut 3/4-16 designed for Mayco concrete pump models including C30HD, C30HDNI, C30HDNI Precision, C30HDN, C30HDNI Zenith, C30HDG, C30HDZ, and C30HDGA, as well as the AR14H asphalt ride-on roller. As a direct OEM replacement, this fastener is manufactured to the same thread specification and material standard as the original hardware installed at the factory. Sourced directly through Multiquip's authorized parts network, the EM968266 ensures a secure, correctly threaded fit with no guesswork on sizing or compatibility.
Key Features
- Genuine OEM Thread Spec — 3/4-16 fine-thread profile matches the original fastener exactly, ensuring proper torque retention without thread stripping or cross-threading risk.
- Direct Hardware Replacement — Installs as a like-for-like swap in the same threaded position as the factory nut, with no rework or adapter hardware needed.
- Broad Model Coverage — Compatible across the C30HD concrete pump family and the AR14H roller, making this a versatile fastener for mixed Multiquip fleets.
- Locking Function Preserved — A properly seated jam nut prevents secondary fasteners and adjustable components from backing off under vibration and operational load, maintaining mechanical integrity of the assembly.
A jam nut is a thin, low-profile nut threaded onto a bolt or stud and tightened against a primary nut or component to lock it in position. In concrete pumps and rollers, jam nuts are commonly used on adjustable linkages, valve assemblies, and drive components where vibration could cause standard fasteners to loosen over time. When a jam nut is worn, damaged, or missing, the components it secures can shift out of adjustment or work free entirely, leading to inconsistent machine operation or potential mechanical failure.
For fitment questions or to confirm compatibility with your specific unit, contact the DHS Equipment parts team for assistance.
Part Details
| Part Number | EM968266 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Jam Nut 3/4-16 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Mayco Pumps | C30HD |
| Mayco Pumps | C30HDNI |
| Mayco Pumps | C30HDNI Precision |
| Mayco Pumps | C30HDN |
| Mayco Pumps | C30HDNI Zenith |
| Rollers | AR14H |
| Mayco Pumps | C30HDG |
| Mayco Pumps | C30HDZ |
| Mayco Pumps | C30HDGA |
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.
