The Genie 1258778GT is a genuine OEM Hex Head Cap Screw, 1-8X8.5,5,ZAG, built for Genie S-series telescopic boom lifts including the S-40, S-45, SX-105 XC, and SX-125 XC. As a direct OEM replacement, this screw is manufactured to the exact thread pitch, length, and zinc-chromate finish specified by Genie, ensuring correct torque performance and corrosion resistance in the field. Cross-reference part number 1258778GT against your machine's parts manual to confirm it is the right fastener for your specific unit before ordering.
Key Features
- OEM-Grade Zinc Coating — ZAG finish provides corrosion resistance suited to outdoor and all-weather working conditions on boom lifts.
- Exact Thread and Dimensional Spec — Manufactured to the specified 1-8 thread and 8.5 length, matching the original fastener for proper seating and clamp load.
- Direct OEM Replacement — A genuine Genie part that installs in place of the original without modification or adaptation.
- Confirmed Fitment — Compatible with Genie S-40, S-45, SX-105 XC, and SX-125 XC telescopic boom lifts.
- Structural Integrity — A correctly spec'd fastener maintains the clamping force required to keep structural and mechanical assemblies secure during operation.
A hex head cap screw is a threaded fastener used to join structural or mechanical components together, tightened with a wrench or socket to a specified torque. On telescopic boom lifts, fasteners of this size play a role in holding assemblies firmly in place under the dynamic loads generated during extension, elevation, and travel. A fastener that is worn, stripped, or replaced with an incorrect substitute can compromise the clamping force of the joint it secures, making it important to replace like-for-like with the correct OEM part. Verify part number 1258778GT against your Genie parts manual before installation to confirm it is the correct screw for your application.
Part Details
| Part Number | 1258778GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Hex Head Cap Screw, 1-8X8.5,5,ZAG |
Compatibility & Fitment
| Name | Model |
|---|---|
| S-40 | S-40 |
| S-45 | S-45 |
| SX-105 XC | SX-105 XC |
| SX-125 XC | SX-125 XC |
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.
