The Genie 1256286GT is a genuine OEM Lock Washer, M12, ZAB designed for a broad range of Genie aerial lifts and telehandlers, including GS scissor lifts, S and Z series boom lifts, and GTH telehandlers. Sourced directly from Genie, this lock washer meets the exact material and dimensional specifications required for your machine. Cross-reference part number 1256286GT against your parts manual to confirm fitment before ordering. Compatible models span the GS-3390, GS-4390, and GS-5390 scissor lifts, S-60 FE Hybrid and S-60 DC telescopic booms, Z-45 XC, Z-60 DC, Z-60 FE Hybrid, and Z-60 FE articulating booms, as well as GTH-636, GTH-844, GTH-1044, GTH-1056, GTH-1244, GTH-1256, and GTH-1544 telehandlers.
Key Features
- Genuine OEM Material Integrity — Manufactured to Genie's zinc-coated ZAB specification, ensuring the correct hardness and corrosion resistance for this M12 fastener application.
- Direct Bolt-On Replacement — Sized precisely for M12 hardware, this lock washer drops into position without rework or shimming, maintaining the correct clamp load of the original assembly.
- Broad Fleet Coverage — A single part number spans Genie GS large-deck scissor lifts, S and Z series boom lifts, and GTH telehandlers, making it a versatile stocking item for mixed Genie fleets.
- Secure Fastener Retention — The lock washer's bite profile resists loosening under vibration and dynamic load cycles — conditions common to aerial work platforms and telehandlers operating on uneven terrain.
- Structural Connection Reliability — On aerial lifts and telehandlers, loose or missing fasteners at critical structural joints are a genuine safety concern. Using the correct OEM lock washer maintains the integrity of those connections.
A lock washer is a hardened ring placed under a nut or bolt head to prevent the fastener from backing out under vibration, repeated loading, or thermal cycling. The washer's serrated or split profile bites into both the fastener and the mating surface, creating mechanical resistance that keeps the joint tight over time. When a lock washer is missing, damaged, or substituted with an incorrect grade, the fastener can gradually loosen — compromising the structural integrity of the joint and potentially creating unsafe operating conditions on equipment where fastener security is critical.
Part Details
| Part Number | 1256286GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Lock Washer, M12, ZAB |
Compatibility & Fitment
| Name | Model |
|---|---|
| S-60 FE Hybrid | S-60 FE Hybrid |
| S-60 DC | S-60 DC |
| GS-3390 | GS-3390 |
| GS-4390 | GS-4390 |
| GS-5390 | GS-5390 |
| GTH-636 | GTH-636 |
| GTH-844 | GTH-844 |
| GTH-1056 | GTH-1056 |
| GTH-1256 | GTH-1256 |
| GTH-1044 | GTH-1044 |
| GTH-1244 | GTH-1244 |
| GTH-1544 | GTH-1544 |
| Z-45 XC | Z-45 XC |
| Z-60 DC | Z-60 DC |
| Z-60 FE Hybrid | Z-60 FE Hybrid |
| Z-60 FE | Z-60 FE |
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.
