Genie 1257458GT Top Lock Nut, 3/4-10, C, ZAGG
Genie

Genie 1257458GT Top Lock Nut, 3/4-10, C, ZAGG

$3.34
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SKU:
1257458GT-Genie
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The Genie 1257458GT Top Lock Nut, 3/4-10, C, ZAGG is a genuine OEM fastener built for Genie GTH telehandlers and Z-series articulating boom lifts, including the GTH-1056, GTH-1256, Z-45/25, Z-45/25J, Z-45/25J DC, Z-45/25J Bi-Energy, Z-45/25J IC Power, Z-45/25 IC, and Z-51/30J. As a genuine Genie part, it is manufactured to the same standards as the fastener originally installed on the machine, ensuring a correct and consistent fit. Cross-reference part number 1257458GT against your machine's parts manual to confirm it is the right nut for your specific unit and serial range.

Key Features

  • Correct Thread Specification — 3/4-10 thread form matches the original fastener exactly, threading directly onto existing studs and bolts without rework or adaptation.
  • Locking Design — The top lock profile resists loosening under vibration and load cycles, maintaining joint integrity across the service life of the assembly.
  • Broad Fitment Across Genie Families — Fits GTH series telehandlers and multiple Z-series articulating boom variants, including Bi-Energy, DC, and IC Power configurations.
  • Supports Structural Reliability — A properly torqued, correctly specified nut keeps fastened joints secure; a worn or incorrect nut can allow movement that accelerates wear on surrounding components.

A top lock nut is a prevailing-torque fastener that uses a deformed or offset top section to create friction against the mating thread, resisting back-off caused by vibration and dynamic loading. On aerial lifts and telehandlers — where booms, structures, and attachments cycle through repeated extension, retraction, and load shifts — fastener integrity directly affects the stability of the assembled joint. When a lock nut loses its locking force through reuse or wear, the clamped connection can work loose, causing play in the joint and accelerated wear on the parts it holds together. Replacing a worn or damaged nut with the correct OEM part restores the designed clamping force and locking resistance for that joint.

Part Details

Part Number1257458GT
BrandGenie
Part TypeGenuine OEM
DescriptionTop Lock Nut, 3/4-10, C, ZAGG

Compatibility & Fitment

Name Models
GTH-1056 GTH-1056
GTH-1256 GTH-1256
Z-45/25 Z-45/25
Z-45/25 IC Z-45/25 IC
Z-45/25J Bi-Energy Z-45/25J Bi-Energy
Z-45/25J DC Z-45/25J DC
Z-45/25J IC Power Z-45/25J IC Power
Z-51/30J Z-51/30J

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.