The Genie 991690GT Lock Star Washer, 3/8 is a genuine OEM fastening component built for Genie AL series light towers, including the AL4, AL4000, AL5, AL5000, AL5HT, and AL5 with Vertical Mast. As a direct OEM part, the part meets Genie's original dimensional and material specifications, ensuring it seats and functions exactly as the original. This washer is the correct replacement when servicing fastener assemblies on these light towers, and confirming part number 991690GT against your machine's parts manual before ordering is always recommended.
Key Features
- Direct-Fit Replacement — sized and profiled to install directly in place of the original, with no rework or re-drilling needed at the fastener location.
- Broad AL Series Coverage — fits multiple Genie AL light tower models, including AL4, AL4000, AL5, AL5000, AL5HT, and AL5 with Vertical Mast.
- Fastener Security — the star-pattern teeth bite into both the fastener face and the mating surface, resisting loosening from vibration during transport and operation.
- OEM Sourcing Confidence — supplied by Genie as a genuine OEM part, so fitment and specification are backed by the original equipment manufacturer.
A lock star washer is placed under a nut or bolt head to resist loosening caused by vibration and dynamic loading. The star-pattern teeth deform slightly when the fastener is torqued down, creating mechanical resistance that prevents the nut or bolt from backing out during machine operation or transport. When a lock washer is worn flat, corroded, or missing, the fastener it was protecting can work loose over time, compromising the integrity of the assembly it secures. Replacing a damaged or missing washer with the correct OEM part restores that resistance and keeps the connection torqued to its intended specification.
Part Details
| Part Number | 991690GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Lock Star Washer, 3/8 |
Compatibility & Fitment
| Name | Models |
|---|---|
| AL4 | AL4 |
| AL5 | AL5 |
| AL5 with Vertical Mast | AL5 with Vertical Mast |
| AL5HT | AL5HT |
| AL4000 | AL4000 |
| AL5000 | AL5000 |
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.
