The Genie 1256837GT is a genuine OEM Jam Nut, 3/4-10, A, ZAG built for Genie S and SX series telescopic boom lifts and the ZX-135/70 articulating boom. Sourced directly from Genie, this fastener meets original engineering tolerances and is the correct replacement for the listed machines. Verify part number 1256837GT against your machine's parts manual to confirm it is the right fit for your specific unit before ordering.
Key Features
- Genuine OEM Fastener Grade — Manufactured to original Genie specifications with a ZAG finish and correct 3/4-10 thread form, ensuring dimensional conformity with the mating hardware.
- Direct OEM Replacement — Drops in as a like-for-like replacement with no modification needed to the threaded assembly it secures.
- Broad Telescopic Boom Coverage — Fits a wide range of Genie S and SX series telescopic booms, including S-40, S-45, S-60, S-65, S-80, S-85, SX-105 XC, SX-125 XC variants, and the ZX-135/70.
- Locking Thread Retention — A jam nut is designed to resist loosening under vibration and load cycling; a worn or missing one can allow the primary fastener to back off, leading to unwanted movement in the assembly it locks.
- OEM Part Number Confidence — Cross-reference 1256837GT against your Genie parts manual to confirm the correct application for your serial number and configuration.
A jam nut is a thin nut threaded against a primary nut or along a threaded rod to lock it in position. By bearing against the face of the adjacent nut or component, it creates a clamping force that resists backing off under vibration and repeated load cycles — a common condition on aerial boom equipment. A missing or damaged jam nut allows the primary fastener to shift, which can introduce play into the assembly and compromise the adjustment or alignment it is meant to hold. Replacing a worn jam nut with the correct OEM part restores the locking function and keeps the fastened joint secure.
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 | S-60 |
| S-60 DC | S-60 DC |
| S-60 FE | S-60 FE |
| S-60 FE Hybrid | S-60 FE Hybrid |
| S-60 HC | S-60 HC |
| S-60 HF | S-60 HF |
| S-60 J | S-60 J |
| S-60 TRAX | S-60 TRAX |
| S-60 XC | S-60 XC |
| S-60X | S-60X |
| S-65 | S-65 |
| S-65 HF | S-65 HF |
| S-65 TRAX | S-65 TRAX |
| S-65 XC | S-65 XC |
| S-80 | S-80 |
| S-80 HF | S-80 HF |
| S-80 J | S-80 J |
| S-80 XC | S-80 XC |
| S-80X | S-80X |
| S-85 | S-85 |
| S-85 HF | S-85 HF |
| S-85 XC | S-85 XC |
| S-85 XC E | S-85 XC E |
| S-85 XC FE | S-85 XC FE |
| SX-105 XC | SX-105 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.
