NUT, NYLOCK, 1/4-20

The Genie 6091GT is a genuine OEM Nylock Nut, 1/4-20 designed for an exceptionally wide range of Genie and Terex equipment, including GS scissor lifts, S and SX telescopic boom lifts, Z and ZX articulating boom lifts, GTH telehandlers, AL and TML light towers, and personnel and material lift lines. Sourced directly from Genie, this fastener matches the exact thread pitch, locking torque, and material specification of the original hardware installed at the factory. Cross-reference part number 6091GT against your parts manual to confirm the correct position before ordering.

Key Features

• Nylon-Insert Locking Thread — The nylon collar compresses against the bolt thread to resist loosening under vibration and dynamic loading, maintaining clamp force even in high-cycle environments.
• Exact 1/4-20 Thread Specification — Sized to the precise Unified National Coarse 1/4-20 standard, so this nut seats cleanly on existing hardware without chasing or reworking mating threads.
• Genuine OEM Sourcing — Produced to the same material grade and dimensional tolerances as the hardware originally used in Genie's assembly process, ensuring consistent locking performance across the fastener's service life.
• Broad Cross-Platform Compatibility — A single part fits GS scissor lifts, S and SX telescopic booms, Z and ZX articulating booms, GTH telehandlers, AL, RL, and TML light towers, and a range of personnel and material lift models — simplifying parts inventory across a mixed fleet.
• Critical in High-Vibration Fastening Points — Wherever Genie specifies a Nylock fastener, a standard hex nut is not an acceptable substitute; the locking feature is part of the joint design and is essential to structural and operational integrity on aerial equipment.

A Nylock nut uses a nylon insert seated in the top of the nut body to create a prevailing-torque locking action. As the nut is driven onto a bolt, the nylon deforms around the thread flanks, generating friction that prevents the nut from backing off under vibration, shock loads, or thermal cycling. On mobile aerial equipment — where structural joints, platform rails, hydraulic line brackets, and panel fasteners are exposed to constant machine movement — this locking function is not incidental; it is a deliberate design requirement. When a Nylock nut is lost, stripped, or substituted with an unlocked fastener, the joint can work loose progressively and without obvious warning, potentially compromising the integrity of the assembly it secures.

Part Details

Compatibility & Fitment

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.