Genie 1257834GT Hex Flange Screw, M12-1.75x45, DIN6921, 10.9, ZAB

The Genie 1257834GT Hex Flange Screw, M12-1.75x45, DIN6921, 10.9, ZAB is a genuine OEM fastener built for Genie SX-180 telescopic boom lifts and Z-62/40 articulating boom lifts. Sourced directly from Genie, this screw meets the original DIN6921 standard and property class 10.9 specification called out in the factory parts manual. Confirm part number 1257834GT against your machine's parts manual before ordering to ensure it is the correct fastener for your application.

Key Features

• Exact-Fit Fastener — M12-1.75x45 thread and flange dimensions match the original hardware, so the screw seats and torques correctly without modification.
• Confirmed Fitment — Designed for the Genie SX-180 super-boom telescopic lift and the Z-62/40 articulating boom lift, covering both major Genie heavy-duty boom families.
• High-Strength Construction — Property class 10.9 rating delivers the clamping force required for structural and mechanical joints on large aerial boom lifts, where fastener integrity is critical to safe operation.
• Integrated Flange Design — The hex flange head distributes load across a wider bearing surface than a standard hex cap screw, reducing the risk of fastener loosening under vibration and dynamic loads.

A hex flange screw combines the function of a standard hex head cap screw with an integral load-spreading flange beneath the head, eliminating the need for a separate washer in most applications. The flange distributes clamping force over a larger surface area, which helps maintain joint integrity on assemblies that experience vibration or cyclical loading — conditions common on large boom lifts during travel and operation. A fastener that has stretched, stripped, or corroded beyond its rated grade should be replaced promptly with the correct OEM specification screw; substituting an incorrect grade or thread pitch risks joint failure and compromises the structural integrity of the assembly it secures.

Part Details

Compatibility & Fitment

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.

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