The Genie 1256857GT is a genuine OEM Hex Head Flange Screw, 3/8-16 x.625, 8, ZAG built for Genie telescopic and articulating boom lifts, including SX, S, Z, ZX, and TZ series machines. As a direct OEM replacement, this screw is manufactured to the exact dimensional and material specifications Genie requires, ensuring a correct and consistent installation every time. Cross-reference part number 1256857GT against your machine's parts manual to confirm it is the correct fastener for your application before ordering.
Key Features
- Genuine OEM Specification — Produced to Genie's exact thread pitch, shank length, grade, and zinc-aluminum-chromate (ZAG) finish requirements for this fastener position.
- Precise Thread and Size Callout — 3/8-16 thread and .625 shank length are the specific identity of this screw; the correct size ensures full thread engagement and proper clamp load at installation.
- Integrated Flange Head — The flange distributes load across a wider bearing surface, eliminating the need for a separate washer and securing the joint more evenly than a standard hex head.
- Broad Boom Lift Compatibility — Fits a wide range of Genie telescopic and articulating boom lifts across the SX, S, Z, ZX, and TZ families, covering many models in the lineup.
A hex head flange screw combines the clamping function of a standard hex cap screw with a built-in flanged washer face beneath the head. This integrated flange spreads the fastener's clamping force over a larger area, reducing the risk of surface damage or loosening under vibration — a common concern on mobile aerial equipment. When a fastener at this position is stripped, corroded, or missing, the joint it secures can work loose during operation, so replacing it with the correct OEM part maintains the structural integrity of the assembly it fastens.
Part Details
| Part Number | 1256857GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Hex Head Flange Screw, 3/8-16 x .625, 8, ZAG |
Compatibility & Fitment
| Name | Models |
|---|---|
| S-40 | S-40 |
| S-85 XC | S-85 XC |
| SX-125 XC | SX-125 XC |
| SX-135 XC | SX-135 XC |
| SX-150 | SX-150 |
| SX-180 | SX-180 |
| TZ-34/20 | TZ-34/20 |
| Z-34/22 IC | Z-34/22 IC |
| Z-45 XC | Z-45 XC |
| Z-45/25 IC | Z-45/25 IC |
| Z-51/30J | Z-51/30J |
| Z-80/60 | Z-80/60 |
| Z-135/70 | Z-135/70 |
| ZX-135/70 | ZX-135/70 |
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.
