The Genie 1257486GT is a genuine OEM Hex Head Flange Screw, M10-1.5X55, DIN6921, Grade 10.9, ZAB finish, built for Genie S series telescopic boom lifts, GS series scissor lifts, and Z series articulating boom lifts. As a direct OEM part, it meets the exact dimensional and material specifications called out in the Genie parts manual. Cross-reference part number 1257486GT against your machine's parts diagram before ordering to confirm it is the correct fastener for your application. This screw fits a broad range of Genie equipment including S-60, S-65, GS-3390, GS-4390, GS-5390, Z-45/25, Z-45/25J IC Power, Z-45 XC, Z-45 FE Hybrid, Z-45 DC, and additional S and Z series variants.
Key Features
- Grade 10.9 Alloy Construction — The DIN6921 Grade 10.9 rating confirms high tensile strength and resistance to shear, meeting the structural demands of aerial lift assemblies where fastener integrity is critical.
- Integrated Flange Head Design — The built-in flange distributes clamping load across a wider bearing surface, reducing the need for a separate washer and providing a secure, consistent seating on mating components.
- ZAB Corrosion-Resistant Finish — The zinc-aluminum-based coating provides corrosion resistance suited to the outdoor and jobsite environments where Genie boom lifts and scissor lifts operate.
- Broad Genie Family Fitment — Fits Genie S series telescopic booms (S-60, S-60 XC, S-60 TRAX, S-65, S-65 XC, S-65 TRAX, and HC/HF variants), GS series scissor lifts (GS-3390, GS-4390, GS-5390), and Z-45 series articulating booms including the Z-45/25, Z-45 XC, Z-45 FE Hybrid, and Z-45 DC.
- Genuine OEM Specification — Sourced directly from Genie, this fastener matches the thread pitch, head geometry, and finish specified for these machines — no substitution or adaptation needed to achieve the correct clamp load.
- Structural Fastener Reliability — A fastener that has stretched, corroded, or lost its torque specification can compromise the structural integrity of the assembly it secures. Replacing worn or damaged screws with the correct OEM part restores the designed clamping force and keeps the joint within specification.
A hex head flange screw combines the function of a hex head cap screw and a washer into a single fastener — the wide flange behind the head spreads the clamping force over a larger area, preventing the fastener from pulling through or deforming softer mating surfaces. On equipment like Genie boom lifts and scissor lifts, fasteners such as this one secure structural, mechanical, and panel components that must hold under dynamic loads and vibration. When a screw of this type is under-torqued, over-torqued, or replaced with an incorrect grade, joint integrity is compromised and component movement or damage can follow. Using the correct OEM part — with the right thread pitch, head geometry, and material grade — ensures the joint performs as the manufacturer designed it.
Part Details
| Part Number | 1257486GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Hex Head Flange Screw, M10-1.5X55, DIN6921, 10.9, ZAB |
Compatibility & Fitment
| Name | Model |
|---|---|
| S-60 | S-60 |
| S-65 | S-65 |
| S-60X | S-60X |
| S-60 XC | S-60 XC |
| S-60 HC | S-60 HC |
| S-60 TRAX | S-60 TRAX |
| S-65 TRAX | S-65 TRAX |
| S-65 XC | S-65 XC |
| S-60 HF | S-60 HF |
| S-65 HF | S-65 HF |
| GS-3390 | GS-3390 |
| GS-4390 | GS-4390 |
| GS-5390 | GS-5390 |
| Z-45/25 | Z-45/25 |
| Z-45/25J IC Power | Z-45/25J IC Power |
| Z-45 XC | Z-45 XC |
| Z-45 FE Hybrid | Z-45 FE Hybrid |
| Z-45 DC | Z-45 DC |
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.
