The Genie 53909GT is a genuine OEM Hex Head Cap Screw, 5/8-11 x 4.0 GR8, built for Genie S series telescopic boom lifts, Z series articulating boom lifts, GTH series telehandlers, and TZ trailer-mounted booms. Sourced directly from Genie, this fastener meets the dimensional and grade specifications called out in the original parts manual. Cross-reference part number 53909GT against your machine's parts manual to confirm it is the correct item for your application before ordering.
Key Features
- Grade 8 Strength Rating — The GR8 designation confirms this screw meets the high-tensile requirements for heavy-duty structural and mechanical fastening on Genie equipment.
- Exact Thread and Length Spec — 5/8-11 thread pitch and 4.0-inch length match the OEM specification exactly, so the screw engages correctly without shimming, re-tapping, or adaptation.
- Broad Genie Fitment — Compatible across S series telescopic booms (S-40, S-45, S-60, S-65, S-80, S-85), Z series articulating booms (Z-60/34, Z-80/60), GTH telehandlers (GTH-636, GTH-644, GTH-842, GTH-844, GTH-1048, GTH-1056), and TZ trailer booms (TZ-50, TZ-50/30).
- Genuine OEM Part — Supplied by Genie as an original equipment fastener, ensuring dimensional conformity and material grade consistency with the hardware used in original assembly.
- Structural Integrity — A fastener that has stretched, corroded, or been over-torqued can no longer hold a joint to spec. Replacing it with the correct grade and size restores the clamping force the connection was designed to carry.
A Hex Head Cap Screw is a structural fastener used to secure components together under significant load. The grade rating determines how much clamping force and tensile stress the fastener can handle before yielding — Grade 8 is among the highest ratings for inch-series fasteners and is specified wherever a joint must withstand heavy mechanical stress. The 5/8-11 thread designation describes the screw's diameter and thread pitch, while the 4.0-inch length determines how deep the fastener engages the mating component. When a screw of this type is damaged, corroded, or incorrectly replaced with a lower-grade fastener, the joint it secures can work loose or fail under load — making accurate replacement with the correct OEM part essential.
Part Details
| Part Number | 53909GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Hex Head Cap Screw, 5/8-11 x 4.0 GR8 |
Compatibility & Fitment
| Name | Model |
|---|---|
| S-60 | S-60 |
| S-65 | S-65 |
| S-40 | S-40 |
| S-45 | S-45 |
| S-80 | S-80 |
| S-85 | S-85 |
| GTH-1056 | GTH-1056 |
| GTH-644 | GTH-644 |
| GTH-844 | GTH-844 |
| GTH-842 | GTH-842 |
| GTH-636 | GTH-636 |
| GTH-1048 | GTH-1048 |
| TZ-50/30 | TZ-50/30 |
| TZ-50 | TZ-50 |
| Z-60/34 | Z-60/34 |
| Z-80/60 | Z-80/60 |
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.
