The Genie 1258511GT is a genuine OEM Hex Head Cap Screw, 1/2-13x5.5, 8, ZAG built for Genie SX-125 XC telescopic boom lifts and GTH-636 and GTH-844 telehandlers. As a genuine OEM part, it is manufactured to the same standards as the original hardware installed at the factory, ensuring correct thread engagement and proper torque retention in the application it was designed for. Cross-reference part number 1258511GT against your machine's parts manual to confirm it is the correct fastener for your specific assembly before ordering.
Key Features
- Exact Thread Specification — 1/2-13 UNC thread and 5.5-inch length are built to spec, so the screw seats and torques correctly in its intended bore without modification.
- Genuine OEM Part — Sourced directly from Genie, ensuring dimensional conformity and material grade that match what was installed on the machine at the time of manufacture.
- Confirmed Fitment — Compatible with Genie SX-125 XC super-boom telescopic lifts and GTH-636 and GTH-844 telehandlers.
- Structural Integrity — Using the correct grade and size fastener in a structural or mechanical joint maintains proper clamp load — an undersized or wrong-grade substitute can lead to joint failure over time.
A hex head cap screw is a threaded fastener used to clamp or secure components within a mechanical assembly. When a fastener is missing, damaged, or replaced with an incorrect substitute, joint clamp load is compromised, which can cause components to shift, loosen, or fail during operation. Replacing a worn or damaged fastener with the correct OEM part restores the joint to its intended specification.
Part Details
| Part Number | 1258511GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Hex Head Cap Screw, 1/2-13x5.5, 8, ZAG |
Compatibility & Fitment
| Name | Models |
|---|---|
| GTH-636 | GTH-636 |
| GTH-844 | GTH-844 |
| SX-125 XC | SX-125 XC |
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.
