The Genie 139441GT is a genuine OEM Hex Jam Nut, 3/8-24, Left Hand designed for the Genie S-60 HC telescopic boom lift. As a genuine Genie part, it is manufactured to the same specifications as the original hardware, ensuring a correct thread engagement and secure fit on the machine. Cross-reference part number 139441GT against your S-60 HC parts manual before ordering to confirm it is the correct item for your unit.
Key Features
- Left-Hand Thread, 3/8-24 — The left-hand thread designation is not interchangeable with standard right-hand hardware; using the correct nut prevents stripping, loosening, and misassembly.
- Jam Nut Profile — The reduced-height jam nut profile is designed to lock against a primary nut or shoulder, maintaining clamping force without adding unnecessary stack height to the fastened joint.
- Confirmed Fitment for S-60 HC — Sourced and verified for the Genie S-60 HC telescopic boom lift, so you can order with confidence that this is the correct OEM part for your machine.
A jam nut is a thin hex nut used in a locking arrangement, typically threaded against a standard nut or into a threaded rod end to prevent rotation or movement under vibration and load. The left-hand thread on this nut means it tightens in the opposite direction to standard fasteners — a design used intentionally in certain assemblies to prevent the nut from self-loosening during operation. Installing a right-hand nut in a left-hand application will cause the fastener to back off under normal machine movement, leading to loose or failed joints. Using the correct part, 139441GT, ensures the assembly holds its adjustment and remains secure throughout the service interval.
Part Details
| Part Number | 139441GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Hex Jam Nut, 3/8-24, Left Hand |
Compatibility & Fitment
| Name | Models |
|---|---|
| S-60 HC | S-60 HC |
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.
