The Genie 139861GT is a genuine OEM Hex Head Cap Screw, 5/8-11 x 2.75, GR8, BO built for the Z-51/30J articulating boom lift. Sourced directly from Genie, this fastener meets the exact grade and dimensional specifications called out in the original parts manual. Cross-reference part number 139861GT against your machine's parts manual to confirm it is the correct item for your unit before ordering.
Key Features
- Exact Thread and Length Match — The 5/8-11 thread pitch and 2.75-inch length are specified to fit the Z-51/30J without modification, ensuring correct engagement and clamping load.
- Black Oxide (BO) Finish — The black oxide surface treatment provides a controlled, uniform finish consistent with Genie OEM specifications for this fastener position.
- Genuine OEM Part — Manufactured to Genie's original design criteria, this screw delivers the dimensional conformity and material grade required for a correct, lasting installation.
- Confirmed Fitment for Z-51/30J — Designed specifically for the Genie Z-51/30J articulating boom lift, supporting accurate parts procurement and correct reassembly.
A hex head cap screw is a fully threaded or partially threaded fastener used to clamp and secure structural joints, brackets, and mechanical assemblies. The grade rating determines how much clamping force the fastener can safely carry — a lower-grade or incorrect-length substitute risks joint movement, fastener fatigue, or failure under load. Using the correct OEM-specified screw, in the right grade and length, ensures the joint performs as the manufacturer intended and holds up through the demands of regular machine operation.
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 | Models |
|---|---|
| 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.
