The Genie 77674GT is a genuine OEM Hex Flange Nut, 5/8-18, Grade 8, ZI built for Genie S series telescopic boom lifts and Z series articulating boom lifts. As a direct OEM replacement, this nut meets Genie's original material and dimensional specifications, ensuring it installs exactly as the factory-issued hardware did. Verify part number 77674GT against your machine's parts manual to confirm it is the correct fastener for your specific unit before ordering.
Key Features
- Flange Design for Secure Clamping — The integrated flange distributes clamping load across a wider bearing surface, reducing the need for a separate washer and providing a more stable hold at the fastening point.
- Exact OEM Fit — Manufactured to Genie's original 5/8-18 thread specification, this nut installs directly in place of the original hardware with no reworking of mating components.
- Broad Boom Lift Compatibility — Fits a wide range of Genie S series telescopic and Z series articulating boom lifts, including TRAX, XC, HF, and J variants, covering many of the most widely deployed models in the fleet.
A hex flange nut combines a standard hex nut with an integral flange that acts as a built-in washer, spreading the clamping load over a larger surface area than a conventional nut alone. This design helps prevent the fastener from pulling through or distorting the mating surface, and it resists loosening caused by vibration — an important characteristic on aerial lift structures that experience repeated movement and dynamic loading during operation. A worn, damaged, or incorrect fastener at a structural joint can allow movement where none should exist, so replacing a compromised nut with the correct OEM-spec part restores the integrity of that connection.
Part Details
| Part Number | 77674GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Hex Flange Nut, 5/8-18, Grade 8, ZI |
Compatibility & Fitment
| Name | Models |
|---|---|
| S-40 HF | S-40 HF |
| S-40 TRAX | S-40 TRAX |
| S-40 XC | S-40 XC |
| S-45 HF | S-45 HF |
| S-45 TRAX | S-45 TRAX |
| S-45 XC | S-45 XC |
| S-60 | S-60 |
| S-60 J | S-60 J |
| S-60 TRAX | S-60 TRAX |
| S-65 | S-65 |
| S-65 TRAX | S-65 TRAX |
| S-65 XC | S-65 XC |
| S-80 J | S-80 J |
| Z-45 XC | Z-45 XC |
| Z-60/34 | Z-60/34 |
| Z-62/40 | Z-62/40 |
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.
