The Genie 1258511GT Hex Head Cap Screw is a genuine OEM fastener built for Genie GS scissor lifts, SX telescopic boom lifts, and GTH telehandlers. As a direct-replacement OEM part, this screw is manufactured to the exact grade, thread pitch, and coating specification required by Genie, so it installs correctly without any rework or substitution. Sourced directly through DHS Equipment, this fastener keeps your machine running with the hardware it was designed to use. Cross-reference part number 1258511GT against your machine's parts manual to confirm it is the correct fastener for your specific unit before ordering.
Key Features
- Grade 8 Strength with Corrosion-Resistant ZAG Coating — The Grade 8 rating and zinc-aluminum-based ZAG coating deliver the clamping strength and surface protection this fastener demands in outdoor and heavy-use environments.
- Exact Thread and Dimensional Match — Cut to 1/2-13 thread and 5.5-inch length, this screw threads directly into OEM-spec holes without chasing threads or shimming.
- Broad Genie Fitment — Fits GS-2046, GS-2646, GS-3246, and GS-4046 scissor lifts; SX-105 XC and SX-125 XC telescopic boom lifts; and GTH-636 and GTH-844 telehandlers.
- Proper Clamping Load Preserved — Using the correct grade and coating ensures joints maintain their designed preload. An underspec fastener can back out or fail under load, compromising structural connections on the machine.
- Genuine OEM Part from Genie — Supplied as a genuine Genie OEM component, this screw meets the same material and dimensional standards as the hardware installed at the factory.
A hex head cap screw is a structural fastener that clamps two or more components together under a controlled load, holding assemblies rigid during machine operation. The Grade 8 designation means the fastener is heat-treated to a higher tensile strength than standard hardware-grade screws, making it suited for joints that experience vibration, shock, or sustained mechanical stress. When a fastener of the wrong grade, thread, or length is used in its place, it may stretch, loosen, or shear under load — causing joint movement, component misalignment, or fastener failure. Replacing worn or damaged hardware with the correct OEM specification screw restores the joint to its intended clamping integrity.
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 | Model |
|---|---|
| SX-105 XC | SX-105 XC |
| SX-125 XC | SX-125 XC |
| GS-2046 | GS-2046 |
| GS-2646 | GS-2646 |
| GS-3246 | GS-3246 |
| GS-4046 | GS-4046 |
| GTH-636 | GTH-636 |
| GTH-844 | GTH-844 |
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.
