The Genie 1256837GT is a genuine OEM Jam Nut, 3/4-10, A, ZAG built for Genie S series telescopic boom lifts, SX series super-boom lifts, and the ZX-135/70 articulating boom lift. As a genuine OEM part, it is manufactured to the same specifications as the original hardware installed at the factory, ensuring consistent thread engagement and dimensional accuracy. Fitment includes models such as the S-65 XC, S-85 XC, SX-125 XC, S-40 TRAX, S-45 TRAX, S-60 J, S-80 J, and ZX-135/70, among others. Cross-reference part number 1256837GT against your machine's parts manual to confirm it is the correct item for your unit.
Key Features
- Exact Thread Specification — 3/4-10 thread form matches the original fastener precisely, providing correct thread engagement without reworking the mating component.
- Broad Boom Lift Compatibility — Fits a wide range of Genie S series telescopic and SX series super-boom lifts, as well as the ZX-135/70 articulating boom, covering XC, TRAX, HF, and J variants.
- Secure Locking Function — A properly torqued jam nut locks a primary nut in position, preventing loosening caused by vibration and load cycling during boom operation.
- Simple, Direct Replacement — Installs in the same position as the original fastener with standard tooling, making it a straightforward service item for scheduled maintenance or field repair.
A jam nut is a thin nut threaded against a standard nut to lock both in place, preventing the assembly from backing off under vibration or dynamic loading. On boom lifts, fasteners are subject to continuous movement, extension cycles, and varying loads, all of which can gradually work a nut loose if it is not properly secured. When a jam nut fails or is missing, the primary nut can back off, creating play in the assembly and potentially leading to misalignment or structural looseness. Replacing a worn or damaged jam nut with the correct OEM part restores the locking function and maintains the integrity of the fastened joint.
Part Details
| Part Number | 1256837GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Jam Nut, 3/4-10, A, ZAG |
Compatibility & Fitment
| Name | Models |
|---|---|
| S-40 HF | S-40 HF |
| S-40 TRAX | S-40 TRAX |
| S-40 XC | S-40 XC |
| S-45 HF | S-45 HF |
| S-45 TRAX | S-45 TRAX |
| S-45 XC | S-45 XC |
| 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 |
| 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.
