The Genie 123559GT is a genuine OEM Hex Head Cap Screw, 3/8-16X1.25 GR8 built for Genie GTH series telehandlers. As a direct OEM replacement, this screw matches the original thread pitch, head geometry, and Grade 8 hardness specification called out in Genie's parts documentation. It is confirmed to fit the GTH-636, GTH-644, GTH-842, GTH-844, GTH-1048, and GTH-1056. Always cross-reference part number 123559GT against your machine's parts manual to verify it is the correct fastener for your specific assembly.
Key Features
- Grade 8 Strength Rating — Manufactured to Grade 8 hardness, delivering the tensile and shear strength required for structural and mechanical fastening points on heavy telehandler assemblies.
- Correct Thread Specification — Cut to 3/8-16 UNC thread at 1.25-inch length, matching the precise thread engagement and clamp load called out in Genie OEM documentation.
- Genuine OEM Part — Sourced directly through Genie's OEM supply chain, ensuring dimensional conformity and material grade consistency with the original fastener.
- Broad GTH Telehandler Coverage — Fits the GTH-636, GTH-644, GTH-842, GTH-844, GTH-1048, and GTH-1056, covering a wide span of the Genie GTH telehandler range.
- Secure Joint Integrity — A correctly torqued Grade 8 hex head cap screw maintains proper clamping force across assemblies; a worn, stretched, or incorrect fastener can allow joint movement that leads to component damage or failure over time.
A hex head cap screw is a fully threaded or partially threaded fastener driven by a wrench or socket and used to clamp two or more components together under a specified torque. Grade 8 hardware is manufactured to a higher tensile strength than standard hardware, making it the required specification wherever Genie engineers need a fastener to hold under dynamic load, vibration, or mechanical stress. Using the wrong grade or an incorrect length can result in under-clamping, thread stripping, or fastener failure — all of which compromise the structural integrity of the assembly being secured. Replacing a worn or damaged fastener with the correct OEM part restores the joint to its original clamping specification.
Part Details
| Part Number | 123559GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Hex Head Cap Screw, 3/8-16X1.25 GR8 |
Compatibility & Fitment
| Name | Model |
|---|---|
| GTH-1048 | GTH-1048 |
| GTH-1056 | GTH-1056 |
| GTH-644 | GTH-644 |
| GTH-844 | GTH-844 |
| GTH-842 | GTH-842 |
| GTH-636 | GTH-636 |
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.
