The Genie 1258563GT is a genuine OEM Hex Head Cap Screw, 1-8X7.8, ZAG, built for Genie S-series telescopic boom lifts and GTH telehandlers. As a direct OEM replacement, this screw is manufactured to the exact thread pitch, diameter, and finish specified for these machines, ensuring a secure, properly torqued connection every time. Compatible models include the S-80 XC, S-85 XC, S-80 HF, S-85 HF, S-85 XC FE, S-85 XC E, GTH-844, GTH-1056, GTH-1256, GTH-1044, GTH-1244, and GTH-1544. Cross-reference part number 1258563GT against your machine's parts manual before ordering to confirm this is the correct fastener for your application.
Key Features
- Genuine OEM Specification — Manufactured to Genie's exact dimensional and material standards, including the correct thread class and ZAG surface finish for this application.
- Correct Thread Form, Every Time — Cut to a 1-8 thread pitch and 7.8-inch length, this screw seats and torques as the original hardware requires — no chasing threads or shimming to compensate for dimensional drift.
- Broad Genie Fitment — Fits Genie S-series telescopic boom lifts (S-80 XC, S-85 XC, S-80 HF, S-85 HF, S-85 XC FE, S-85 XC E) and GTH-series telehandlers (GTH-844, GTH-1044, GTH-1056, GTH-1244, GTH-1256, GTH-1544).
- Structural Integrity Where It Counts — A fastener at this size carries significant clamping load. Using a correctly graded, properly dimensioned screw keeps the joint tight and prevents loosening under vibration and working loads.
- Operational Safety — On aerial lifts and telehandlers, fastener failure at a structural connection is a serious safety concern. Replacing worn or damaged hardware with the correct OEM screw restores the joint to its designed clamping capacity.
A hex head cap screw is a structural fastener used to clamp or secure components together with a defined torque. At 1-8 thread pitch and 7.8 inches in length, this is a heavy-duty fastener designed to maintain a firm, load-bearing connection under the stresses of regular machine operation. A screw that is the wrong length, wrong thread, or incorrect grade will not develop the required clamp load — and on working aerial equipment and telehandlers, a loose or failing joint can compromise both performance and safety. Always replace worn or damaged fasteners with the correct OEM part and torque to specification.
Part Details
| Part Number | 1258563GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Hex Head Cap Screw, 1-8X7.8, ZAG |
Compatibility & Fitment
| Name | Model |
|---|---|
| S-80 XC | S-80 XC |
| S-85 XC | S-85 XC |
| S-80 HF | S-80 HF |
| S-85 HF | S-85 HF |
| S-85 XC FE | S-85 XC FE |
| S-85 XC E | S-85 XC E |
| GTH-844 | GTH-844 |
| GTH-1056 | GTH-1056 |
| GTH-1256 | GTH-1256 |
| GTH-1044 | GTH-1044 |
| GTH-1244 | GTH-1244 |
| GTH-1544 | GTH-1544 |
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.
