The Genie 123840GT is a genuine OEM Hex Head Cap Screw, 5/16-18 x.75, GR8, Yellow Zinc built for Genie AL series light towers and GTH series telehandlers. As a genuine Genie OEM fastener, part number 123840GT meets the exact material grade and dimensional specification required for the application. This screw fits a range of Genie equipment including AL4, AL4000, AL5, AL5HT, AL5000 with Vertical Mast, RL4 light towers, and GTH-636, GTH-644, GTH-842, GTH-844, GTH-1048, and GTH-1056 telehandlers. Cross-reference 123840GT against your machine's parts manual to confirm the correct application before ordering.
Key Features
- Exact Dimensional Fit — 5/16-18 thread pitch and .75-inch length match the original specification exactly, ensuring correct seating and clamping force without rework.
- Broad Genie Compatibility — Fits AL and RL series light towers as well as GTH series telehandlers, making it a practical stocking item across multiple Genie equipment families.
- Genuine OEM Part — Sourced directly from Genie, this fastener meets the same material and dimensional standards as the hardware it replaces, with no guesswork on grade or finish.
A hex head cap screw is a fully threaded or partially threaded fastener used to secure components together, typically passing through a clearance hole and threading into a tapped hole or a mating nut. The Grade 8 rating indicates a high-strength alloy steel construction capable of handling significant clamping loads without stretching or shearing. When a fastener of this type is under-specified — whether by using a lower grade or incorrect thread pitch — it can loosen under vibration or fail under load, compromising the integrity of the assembly it secures. Using the correct OEM-specified hardware ensures the joint performs as designed throughout the service life of the equipment.
Part Details
| Part Number | 123840GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Hex Head Cap Screw, 5/16-18 x .75, GR8, Yellow Zinc |
Compatibility & Fitment
| Name | Models |
|---|---|
| AL4 | AL4 |
| AL5 | AL5 |
| AL5 with Vertical Mast | AL5 with Vertical Mast |
| AL5HT | AL5HT |
| AL4000 | AL4000 |
| AL5000 | AL5000 |
| GTH-636 | GTH-636 |
| GTH-644 | GTH-644 |
| GTH-842 | GTH-842 |
| GTH-844 | GTH-844 |
| GTH-1048 | GTH-1048 |
| GTH-1056 | GTH-1056 |
| RL4 | RL4 |
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.
