The Genie 1258049GT TL Nut, 5/8-11, C, ZAG is a genuine OEM fastener built for a wide range of Genie telescopic and articulating boom lifts, as well as RL series light towers. As a direct OEM replacement, this nut is manufactured to the same dimensional and material standards as the original hardware installed at the factory. Confirm part number 1258049GT against your machine's parts manual to ensure it is the correct fastener for your specific unit and application.
Key Features
- Genuine OEM Hardware Grade — Produced to Genie's dimensional and finish specifications, with a ZAG (zinc-alloy) coating for corrosion resistance and a C-class tolerance profile for consistent thread engagement on 5/8-11 threaded fastener applications.
- Exact-Fit Replacement — Matches the original 5/8-11 thread specification and nut profile, allowing straightforward installation without modification to the mating fastener or mounting hardware.
- Broad Genie Fitment — Compatible with Genie S and SX series telescopic boom lifts, Z and ZX series articulating boom lifts, and RL series vertical mast light towers, covering a substantial portion of the Genie fleet.
- Structural Fastener Integrity — A correctly torqued, properly seated nut maintains the clamping load required to keep structural and mechanical connections secure during operation. A damaged or missing nut can allow joints to loosen under load cycles.
- Supports Safe Machine Operation — On aerial lifts, fastener condition is directly tied to structural integrity. Replacing worn, stripped, or corroded hardware with genuine OEM-spec nuts helps maintain the mechanical integrity of critical joints.
A TL nut is a prevailing-torque, top-lock style nut that uses a distorted or deformed thread section at the top of the nut to resist loosening under vibration and dynamic loading — without relying on a nylon insert. This design makes it well suited to connections that experience cyclic stress during lifting, extension, or travel. When a nut strips, corrodes, or goes missing, the joint it was securing loses its clamping force, which can lead to movement, wear on the mating fastener, and eventual failure of the connection. Replacing it promptly with the correct OEM part restores the joint to its intended clamping specification.
Part Details
| Part Number | 1258049GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | TL Nut, 5/8-11, C, ZAG |
Compatibility & Fitment
| Name | Model |
|---|---|
| RL4 Vertical Mast | RL4 Vertical Mast |
| RL4 LED Vertical Mast | RL4 LED Vertical Mast |
| S-60 | S-60 |
| S-65 | S-65 |
| S-60X | S-60X |
| S-60 XC | S-60 XC |
| S-60 HC | S-60 HC |
| S-60 TRAX | S-60 TRAX |
| S-65 TRAX | S-65 TRAX |
| SX-105 XC | SX-105 XC |
| SX-125 XC | SX-125 XC |
| Z-40/23N | Z-40/23N |
| Z-40/23N RJ | Z-40/23N RJ |
| 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.
