The Genie 1257628GT Serrated Nut, 3/8-16, ZAG is a genuine OEM fastener built for Genie telescopic boom lifts, articulating boom lifts, and trailer-mounted boom lifts. As a direct OEM replacement, this serrated nut is manufactured to the same specification as the original hardware it replaces, ensuring a correct and consistent fit without rework or modification. Cross-reference part number 1257628GT against your machine's parts manual to confirm it is the right fastener for your application. It fits a broad range of Genie boom lift models, including S-series telescopic booms, Z-series and ZX-series articulating booms, SX-series super booms, and TZ trailer-mounted booms.
Key Features
- Genuine OEM Quality — Manufactured to Genie's original dimensional and material specifications, delivering the same thread engagement, seating, and holding strength as the factory-installed fastener.
- Serrated Bearing Face — The serrated flange bites into the mating surface to resist loosening under vibration, maintaining clamp load over time in demanding jobsite conditions.
- Exact 3/8-16 Thread Fit — The 3/8-16 thread specification matches the original hardware precisely, dropping directly into place on the correct fastener points without modification.
- Wide Boom Lift Compatibility — Fits multiple Genie boom lift families, including S-series telescopic booms, Z-series and ZX-series articulating booms, SX-series super booms, and TZ trailer-mounted booms.
- Structural Integrity — A loose or damaged fastener on a boom lift can compromise the structural integrity of the assembly it secures; replacing worn hardware promptly with the correct OEM part keeps connections tight and assemblies secure.
A serrated nut is a prevailing-torque fastener that uses a serrated bearing face to grip the mating surface and resist rotational loosening caused by vibration, dynamic loads, and repeated movement. On aerial boom lifts, fasteners are subject to constant motion and stress cycles, making vibration resistance a critical characteristic. A nut that has worked loose or stripped its threads can allow structural connections to shift or separate, compromising the assembly it holds. Replacing a worn or damaged nut with the correct OEM part — confirmed by cross-referencing part number 1257628GT in your Genie parts manual — restores the holding strength and security of that connection.
Part Details
| Part Number | 1257628GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Serrated Nut, 3/8-16, ZAG |
Compatibility & Fitment
| Name | Models |
|---|---|
| S-60 J | S-60 J |
| S-65 XC | S-65 XC |
| S-80 J | S-80 J |
| S-85 XC | S-85 XC |
| SX-125 XC | SX-125 XC |
| TZ-50/30 | TZ-50/30 |
| Z-34/22 IC | Z-34/22 IC |
| Z-45/25 IC | Z-45/25 IC |
| Z-51/30J | Z-51/30J |
| Z-60 FE Hybrid | Z-60 FE Hybrid |
| Z-60/37 FE Hybrid | Z-60/37 FE Hybrid |
| ZX-135/70 | ZX-135/70 |
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.
