The Genie 990460GT is a genuine OEM Lock Washer, 5/16 ZP designed for Genie and Terex portable light towers including the AL4000, AL5000, AL5HT, RL4000, RL4, TML-4000, and AL4 and AL5 series units. As a factory-sourced fastener component, this washer matches the original specification exactly, making it a dependable choice when servicing or reassembling hardware connections on your light tower. Cross-reference part number 990460GT against your parts manual to confirm fitment before ordering.
Key Features
- Genuine OEM Fastener Grade — Zinc-plated 5/16 lock washer sourced directly from Genie, ensuring the correct material hardness and surface finish for secure hardware retention.
- Direct Hardware Match — Installs in place of the original without rework, matching the thread engagement and clamp load of the factory assembly.
- Broad Light Tower Compatibility — Fits a wide range of Genie and Terex portable light tower models, including the AL4000, AL5000, AL5HT, RL4000, RL4, TML-4000, AL4, and AL5 series.
- Corrosion-Resistant Zinc Plating — The ZP finish helps resist rust and surface corrosion in outdoor jobsite conditions, extending the service life of the fastener assembly.
- Prevents Fastener Loosening — Lock washers maintain clamping force under vibration, keeping critical connections tight during generator operation and transport.
A lock washer is a hardened fastener insert placed beneath a bolt or nut to resist loosening caused by vibration and dynamic loading. On light tower equipment, fasteners are subjected to constant engine vibration during operation and road vibration during towing — conditions that can gradually back out a standard nut or bolt without the added resistance a lock washer provides. When a lock washer is worn, deformed, or missing, fastener connections can loosen over time, potentially compromising structural and mechanical assemblies on the unit.
Part Details
| Part Number | 990460GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Lock Washer, 5/16 ZP |
Compatibility & Fitment
| Name | Model |
|---|---|
| AL4000 | AL4000 |
| AL5000 | AL5000 |
| RL4000 | RL4000 |
| TML-4000 | TML-4000 |
| AL5 with Vertical Mast | AL5 with Vertical Mast |
| AL4 | AL4 |
| RL4 | RL4 |
| AL5 | AL5 |
| AL5HT | AL5HT |
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.
