The Genie 123840GT Hex Head Cap Screw is a genuine OEM fastener built for Genie AL and RL light towers and GTH series telehandlers. As a Grade 8, 5/16-18x.75 fastener, this screw meets the strength and dimensional specs Genie requires at the factory, making it the correct choice when an original screw needs replacement. Cross-reference part number 123840GT against your machine's parts manual to confirm it is the right item for your specific unit before ordering.
Key Features
- Grade 8 Strength Rating — Manufactured to Grade 8 specification, delivering the tensile strength and hardness Genie calls out for this fastener position.
- Exact Thread and Length Match — 5/16-18 thread pitch and .75-inch length conform to OEM dimensions, so this screw seats and torques correctly without modification.
- Broad Genie Fitment — Fits AL and RL series light towers, select AL models with vertical mast, and GTH series telehandlers including the GTH-636, GTH-844, GTH-1048, and GTH-1056.
- Genuine OEM Part — Sourced directly through Genie's OEM supply chain, so the material grade, plating, and thread form match what left the factory originally.
- Direct Fastener Replacement — Replaces a worn, stripped, or missing screw without reworking the mounting point, keeping the assembly torqued to spec and structurally sound.
A hex head cap screw is a fully threaded or partially threaded fastener with a six-sided head designed to be driven with a wrench or socket. It clamps two or more components together and holds them at a defined load once torqued to specification. When a screw is stripped, corroded, or missing, the joint it secures can shift or loosen under vibration and working loads, which can compromise the integrity of the assembly. Replacing a damaged fastener with the correct OEM grade and size restores the clamping load the joint was designed around.
Part Details
| Part Number | 123840GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Hex Head Cap Screw, 5/16-18x.75, GR8, Y |
Compatibility & Fitment
| Name | Model |
|---|---|
| AL4000 | AL4000 |
| AL5000 | AL5000 |
| RL4000 | RL4000 |
| TML-4000 | TML-4000 |
| AL5 with Vertical Mast | AL5 with Vertical Mast |
| AL4 | AL4 |
| RL4 | RL4 |
| AL5 | AL5 |
| AL5HT | AL5HT |
| GTH-844 | GTH-844 |
| GTH-644 | GTH-644 |
| GTH-842 | GTH-842 |
| GTH-636 | GTH-636 |
| GTH-1048 | GTH-1048 |
| GTH-1056 | GTH-1056 |
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.
