The Genie 1256863GT is a genuine OEM Flat Washer,.75, F436, HRD, ZAG designed for a wide range of Genie telescopic boom lifts, articulating boom lifts, scissor lifts, and telehandlers. Sourced directly from Genie, this washer meets the exact material and dimensional standards specified for these machines. It fits across the S and SX telescopic boom families, Z and ZX articulating boom families, GS scissor lift lineup, and GTH telehandler series — making it one of the most broadly compatible hardware components in the Genie parts catalog. Cross-reference part number 1256863GT against your machine's parts manual to confirm the correct application before ordering.
Key Features
- Hardened F436 Construction — Built to the F436 structural hardness grade with a zinc-and-gold (ZAG) corrosion-resistant finish, providing the load-bearing durability this washer needs under high-clamp-force fastener assemblies.
- Genuine OEM Component — Supplied as a genuine Genie OEM part, this washer matches the exact specification called out in the original assembly — same material grade, same plating, same .75 bearing surface.
- Drop-In Hardware Replacement — This flat washer installs directly in place of the original with no rework or modification to mating fasteners or structural joints.
- Broad Fleet Coverage — Fits Genie S and SX telescopic booms, Z and ZX articulating booms, GS scissor lifts, and GTH telehandlers — a single part number that spans a large mixed fleet.
- Maintains Structural Joint Integrity — A correctly spec'd hardened washer distributes bolt load evenly across the joint surface, preventing fastener pull-through and maintaining the clamping force critical to structural connections on aerial equipment.
- Safety-Critical Fastener Application — On boom lifts and scissor lifts, structural fastener assemblies are load-bearing and subject to inspection. Using the correct OEM-specified washer grade helps ensure joints meet the design intent of the machine.
A flat washer functions as a load-distribution interface between a fastener — bolt head or nut — and the surface it bears against. In heavy-equipment applications, a hardened-grade washer like this one prevents the fastener from pulling through or deforming softer base material under high clamping loads, and it protects the mating surface from rotational damage during torquing. The F436 designation indicates a structural-grade hardness level suited for bolted connections that must maintain consistent clamping force over time and under dynamic loads. When a washer is worn, deformed, or replaced with an incorrect grade, joint integrity degrades — fasteners can loosen, structural connections can shift, and the safety margin built into the original design is compromised.
Part Details
| Part Number | 1256863GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Flat Washer, .75, F436, HRD, 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 |
| SX-135 XC | SX-135 XC |
| 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 |
| SX-105 XC | SX-105 XC |
| SX-125 XC | SX-125 XC |
| S-40 XC | S-40 XC |
| S-45 XC | S-45 XC |
| S-40 TRAX | S-40 TRAX |
| S-45 TRAX | S-45 TRAX |
| S-40 HF | S-40 HF |
| S-45 HF | S-45 HF |
| S-60 J | S-60 J |
| S-80 J | S-80 J |
| S-60 FE Hybrid | S-60 FE Hybrid |
| S-60 DC | S-60 DC |
| S-60 FE | S-60 FE |
| S-85 XC FE | S-85 XC FE |
| S-85 XC E | S-85 XC E |
| GS-2032 | GS-2032 |
| GS-2632 | GS-2632 |
| GS-3232 | GS-3232 |
| GS-2046 | GS-2046 |
| GS-2646 | GS-2646 |
| GS-3246 | GS-3246 |
| GS-1530 | GS-1530 |
| GS-1532 | GS-1532 |
| GS-1930 | GS-1930 |
| GS-1932 | GS-1932 |
| GS-1330m | GS-1330m |
| GS-4046 | GS-4046 |
| GS-1332m | GS-1332m |
| GS-1432m | GS-1432m |
| GS-1932m | GS-1932m |
| GTH-636 | GTH-636 |
| GTH-844 | GTH-844 |
| GTH-1056 | GTH-1056 |
| GTH-1256 | GTH-1256 |
| GTH-1044 | GTH-1044 |
| GTH-1244 | GTH-1244 |
| GTH-1544 | GTH-1544 |
| Z-135/70 | Z-135/70 |
| Z-51/30J | Z-51/30J |
| Z-62/40 | Z-62/40 |
| Z-30/20 N | Z-30/20 N |
| Z-30/20N RJ | Z-30/20N RJ |
| Z-40/23N | Z-40/23N |
| Z-40/23N RJ | Z-40/23N RJ |
| Z-45/25 | Z-45/25 |
| Z-45/25J DC | Z-45/25J DC |
| Z-45/25J Bi-Energy | Z-45/25J Bi-Energy |
| Z-45/25J IC Power | Z-45/25J IC Power |
| ZX-135/70 | ZX-135/70 |
| Z-80/60 | Z-80/60 |
| Z-34/22 Bi-Energy | Z-34/22 Bi-Energy |
| Z-34/22 DC | Z-34/22 DC |
| Z-34/22 N | Z-34/22 N |
| Z-45 XC | Z-45 XC |
| Z-60/37 DC | Z-60/37 DC |
| Z-60/37 FE Hybrid | Z-60/37 FE Hybrid |
| Z-45/25 IC | Z-45/25 IC |
| Z-60 DC | Z-60 DC |
| Z-60 FE Hybrid | Z-60 FE Hybrid |
| Z-45 FE Hybrid | Z-45 FE Hybrid |
| Z-45 DC | Z-45 DC |
| Z-60 FE | Z-60 FE |
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.
