The Genie 1255804GT is a genuine OEM Jam Nut, 1/2-13, A, ZAG built for a wide range of Genie equipment including SX and S telescopic boom lifts, Z and ZX articulating boom lifts, GTH telehandlers, TZ trailer-mounted booms, and RL vertical mast units. As a factory-sourced part, it is manufactured to the same specifications as the hardware installed at the point of assembly, ensuring correct thread engagement and seating. Cross-reference part number 1255804GT against your machine's parts manual to confirm it is the right fastener for your application before ordering.
Key Features
- Correct Thread Specification — Cut to a 1/2-13 thread profile, this nut threads directly onto the mating fastener without chasing or rework, preserving the integrity of the threaded connection.
- Broad Equipment Compatibility — Fits Genie SX and S telescopic booms, Z and ZX articulating booms, TZ trailer-mounted booms, GTH telehandlers, and RL vertical mast units, making it a widely applicable OEM fastener across the Genie product range.
- Locking Retention — A jam nut works by bearing against a primary nut to prevent loosening under vibration and load cycling — a critical function on aerial lifts and telehandlers where fastener integrity is directly tied to structural and mechanical stability.
- Direct OEM Sourcing — Ordering the correct OEM part number eliminates the guesswork of cross-referencing aftermarket equivalents and ensures the fastener matches the original hardware in thread form, grade, and finish.
A jam nut is a thin locking nut threaded against a standard nut or into a fastener assembly to prevent movement or loosening caused by vibration and dynamic loading. On aerial lifts and telehandlers, fasteners are subject to constant machine movement, boom extension cycles, and varying load conditions — a loose or incorrect nut in a structural or mechanical connection can lead to accelerated wear or component displacement. Replacing a worn or missing jam nut with the correct OEM part, such as the 1255804GT, restores the clamping integrity of the joint and keeps the connection performing as designed.
Part Details
| Part Number | 1255804GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Jam Nut, 1/2-13, A, ZAG |
Compatibility & Fitment
| Name | Models |
|---|---|
| GTH-636 | GTH-636 |
| GTH-844 | GTH-844 |
| GTH-1056 | GTH-1056 |
| GTH-1256 | GTH-1256 |
| RL4 LED Vertical Mast | RL4 LED Vertical Mast |
| RL4 Vertical Mast | RL4 Vertical Mast |
| S-45 XC | S-45 XC |
| S-85 XC | S-85 XC |
| SX-125 XC | SX-125 XC |
| SX-135 XC | SX-135 XC |
| SX-150 | SX-150 |
| SX-180 | SX-180 |
| TZ-34/20 | TZ-34/20 |
| TZ-50/30 | TZ-50/30 |
| Z-45 DC | Z-45 DC |
| Z-60 DC | Z-60 DC |
| Z-60/37 DC | Z-60/37 DC |
| 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.
