The Genie 1256122GT is a genuine OEM Hex Head Cap Screw, 3/8-16 x 4, 8, ZAG built for a broad range of Genie equipment including S and SX series telescopic boom lifts, GS scissor lifts, GTH telehandlers, and ZX articulating booms. As a direct OEM replacement, this screw matches Genie's original material grade, thread specification, and zinc-alloy coating exactly — no sizing up or substitution required. Confirmed fitment covers models including the S-60, S-60 XC, S-60 TRAX, S-65, S-65 TRAX, S-60X, S-60 HC, GS-3384, GS-3390, GS-4390, GS-5390, GTH-636, GTH-844, and ZX-135/70. Cross-reference part number 1256122GT against your machine's parts manual before ordering to confirm it is the correct item for your serial range.
Key Features
- Grade 8 Strength with OEM Zinc-Alloy Coating — Manufactured to the original grade 8 tensile rating with a ZAG zinc-alloy finish for corrosion resistance, matching Genie's specification at the source.
- Exact Thread and Length Specification — 3/8-16 thread pitch and 4-inch length match the original fastener precisely, threading directly into existing bosses and brackets without rework.
- Wide Multi-Family Fitment — Fits Genie S series telescopic booms, GS scissor lifts, GTH telehandlers, and ZX articulating booms, making it a practical stocking fastener across a mixed fleet.
- Structural Integrity Under Load — A properly torqued, correctly specified fastener maintains the clamping force that holds structural joints and assemblies together. A degraded or wrong-grade substitute can back out or shear under the dynamic loads these machines generate.
- Genuine OEM Sourcing — Supplied directly from Genie's OEM parts program, so the grade marking, coating, and dimensional tolerance are traceable to the original design — not approximated by an aftermarket substitute.
A hex head cap screw is a structural fastener that clamps two or more components together by applying controlled clamping force when torqued to specification. On aerial lifts and telehandlers, fasteners like this one appear throughout the chassis, turntable, boom structure, platform, and ancillary brackets — locations where vibration, dynamic loading, and environmental exposure can work a fastener loose or cause corrosion over time. Using the correct grade and coating specification matters because an under-spec fastener may stretch, loosen, or fail at loads the joint was designed to handle. When inspecting or servicing these machines, any fastener showing thread damage, corrosion, or signs of loosening should be replaced with the correct OEM part to restore the joint to its original clamping specification.
Part Details
| Part Number | 1256122GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Hex Head Cap Screw, 3/8-16 x 4, 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 |
| GS-3384 | GS-3384 |
| GS-3390 | GS-3390 |
| GS-4390 | GS-4390 |
| GS-5390 | GS-5390 |
| GTH-636 | GTH-636 |
| GTH-844 | GTH-844 |
| 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.
