The Genie 139861GT is a genuine OEM Hex Head Cap Screw, 5/8-11 x 2.75 GR8 BO designed for Genie Z-series articulating boom lifts, including the Z-45/25, Z-45/25J DC, Z-45/25J Bi-Energy, Z-40/23N, Z-40/23N RJ, Z-51/30J, Z-45/25 IC, and Z-45/25J IC. As a genuine Genie OEM fastener, it is manufactured to the exact thread pitch, length, grade, and finish specified for these machines — no sorting through hardware bins or guessing at substitutes. Cross-reference part number 139861GT against your machine's parts manual to confirm it is the correct item for your application before ordering.
Key Features
- Grade 8 Strength, OEM Specification — Manufactured to GR8 tensile requirements with a black oxide (BO) finish, matching the original fastener spec for the listed Z-series booms.
- Exact Thread and Dimensional Match — 5/8-11 UNC thread pitch and 2.75-inch length conform precisely to the original, so the screw seats and torques correctly without rework.
- Broad Z-Series Coverage — Fits multiple Genie Z-series articulating boom lift variants, including IC, DC, Bi-Energy, and RJ configurations across the Z-40 and Z-45 and Z-51 families.
- Structural Integrity Where It Counts — A fastener operating below its specified grade or outside its dimensional tolerance can allow joint movement or loosening under load. Using the correct OEM-grade screw maintains the clamping force the joint was engineered to hold.
- Genuine OEM Part — Sourced directly from Genie, ensuring traceability and confidence that the part leaving the shelf is the same one that left the factory.
A hex head cap screw is a structural fastener used to clamp two or more components together with a controlled, rated clamping force. On articulating boom lifts, fasteners of this grade and size are typically used where joint integrity is critical — a loose or under-strength screw can allow components to shift, creating wear or compromising the connection over time. Replacing a damaged or missing screw with the correct grade, thread, length, and finish ensures the joint performs as designed and holds its torque specification through the working loads the machine encounters.
Part Details
| Part Number | 139861GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Hex Head Cap Screw, 5/8-11 x 2.75 GR8 BO |
Compatibility & Fitment
| Name | Model |
|---|---|
| Z-45/25 | Z-45/25 |
| Z-45/25J DC | Z-45/25J DC |
| Z-45/25J Bi-Energy | Z-45/25J Bi-Energy |
| Z-40/23N | Z-40/23N |
| Z-40/23N RJ | Z-40/23N RJ |
| Z-51/30J | Z-51/30J |
| Z-45/25 IC | Z-45/25 IC |
| Z-45/25J IC | Z-45/25J IC |
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.
