The Genie 1261250GT is a genuine OEM Nylock Nut, 5/16-18, 8, ZAG built for Genie SX telescopic boom lifts, S and Z articulating and telescopic booms, and GTH telehandlers. As a direct OEM replacement, this nut meets Genie's original design specifications and installs exactly as the factory part did. Confirm part number 1261250GT against your machine's parts manual to be certain this is the correct fastener for your unit before ordering.
Key Features
- OEM-Grade Material and Finish — Supplied in a grade 8 zinc alloy-coated (ZAG) finish that resists corrosion and meets the material specification of the original Genie fastener.
- Exact Thread Specification — 5/16-18 thread form matches the original fastener precisely, seating flush without modification to the mating hardware.
- Nylon Insert Locking Action — The nylon collar grips the mating bolt thread and resists vibration-induced loosening, maintaining joint integrity through repeated machine cycles and rough-terrain operation.
- Broad Genie Equipment Fitment — Fits across Genie SX super-boom telescopic lifts, S and Z boom lift families, and GTH telehandler models, making it a versatile stocking fastener for multi-machine fleets.
- Genuine Genie OEM Part — Sourced directly from Genie, this fastener carries full OEM traceability and is the correct specification for the machines it serves.
A Nylock nut is a prevailing-torque fastener that uses a nylon insert at the top of the nut to grip the mating bolt thread. Unlike a standard nut that can work loose under vibration and dynamic loading, the nylon collar creates continuous friction against the bolt thread, keeping the joint secure during operation. On aerial lifts and telehandlers, where structural and mechanical connections are subjected to continuous movement and load cycling, a fastener that holds its torque is essential to joint integrity. A worn or missing Nylock nut allows bolted connections to loosen progressively, which can lead to component misalignment or structural play if not addressed promptly.
Part Details
| Part Number | 1261250GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Nylock Nut, 5/16-18, 8, ZAG |
Compatibility & Fitment
| Name | Models |
|---|---|
| GTH-636 | GTH-636 |
| GTH-844 | GTH-844 |
| GTH-1056 | GTH-1056 |
| S-60 J | S-60 J |
| S-80 J | S-80 J |
| SX-125 XC | SX-125 XC |
| SX-135 XC | SX-135 XC |
| SX-150 | SX-150 |
| SX-180 | SX-180 |
| Z-45 XC | Z-45 XC |
| Z-51/30J | Z-51/30J |
| Z-60/34 | Z-60/34 |
| Z-62/40 | Z-62/40 |
| Z-80/60 | Z-80/60 |
| 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.
