The Genie 1255391GT Hex Head Cap Screw is a genuine OEM fastener built for Genie S-series telescopic boom lifts and Z-series articulating boom lifts. As a direct OEM replacement, this screw is manufactured to the same specification as the original, ensuring the correct thread pitch, shank length, and zinc-chromate finish come standard. Cross-reference part number 1255391GT against your machine's parts manual to confirm it is the right fastener for your application before ordering.
Key Features
- OEM-Grade Zinc Coating — Genuine Genie construction with a zinc-chromate (ZAG) finish that resists corrosion in the demanding outdoor environments where these boom lifts operate.
- Correct Thread and Length Specification — Produced to the exact 3/8-16 thread form and 7,8 shank length called out in the Genie parts manual, so it seats and torques correctly without rework.
- Broad S-Series and Z-Series Coverage — Fits a wide range of Genie telescopic boom lifts including S-60, S-65, S-80, and S-85 variants, as well as the Z-80/60 and ZX-135/70 articulating booms.
- Structural Fastener Integrity — A fastener at the wrong grade or dimension can introduce play or premature wear into a structural joint. Using the correct OEM screw maintains the clamping force and joint integrity the machine was engineered for.
- Safety-Critical Application — On aerial boom lifts, fastener integrity directly affects the reliability of structural and mechanical connections. Replacing worn or damaged hardware with genuine OEM parts is an essential step in keeping these machines operating safely at height.
A hex head cap screw is a fully threaded or partially threaded fastener tightened with a wrench, used to clamp and secure structural or mechanical assemblies. On Genie boom lifts, fasteners like this one hold together components that are subject to vibration, load cycling, and environmental exposure. A screw that has stretched, corroded, or been replaced with an incorrect grade can fail to maintain the clamping load the joint requires, leading to looseness or accelerated wear at the connection point. Replacing it with the correct OEM part restores the specified clamping force and keeps the assembly performing as designed.
Part Details
| Part Number | 1255391GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Hex Head Cap Screw, 3/8-16X7,8,ZAG |
Compatibility & Fitment
| Name | Model |
|---|---|
| S-60 | S-60 |
| S-65 | S-65 |
| S-60X | S-60X |
| S-60 XC | S-60 XC |
| S-60 HC | S-60 HC |
| S-60 TRAX | S-60 TRAX |
| S-65 TRAX | S-65 TRAX |
| S-65 XC | S-65 XC |
| S-60 HF | S-60 HF |
| S-65 HF | S-65 HF |
| S-80X | S-80X |
| S-80 | S-80 |
| S-85 | S-85 |
| S-80 XC | S-80 XC |
| S-85 XC | S-85 XC |
| S-80 HF | S-80 HF |
| S-85 HF | S-85 HF |
| S-85 XC FE | S-85 XC FE |
| S-85 XC E | S-85 XC E |
| ZX-135/70 | ZX-135/70 |
| 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.
