Satco 90-1804 Zinc Plated Toothwasher

Satco 90-1804 Toothwasher for Secure Lighting Fixture Assembly

The 90-1804 from Satco is a zinc plated toothwasher used to secure threaded connections during lighting fixture assembly. It is suitable for general fixture hardware applications. Key features include a corrosion-resistant zinc plated finish and a toothed design intended to help maintain a snug fit under vibration.

Key Features and Benefits of This Toothwasher

The toothed edge bites into mating surfaces to help resist loosening from vibration or thermal cycling common in lighting fixtures. Zinc plating protects the washer from surface corrosion during storage and handling, and its small size makes it easy to keep on hand for repairs and new installations alike.

Where to Use the 90-1804 Toothwasher

This toothwasher is intended for general lighting fixture assembly, such as securing stems, canopies, or mounting hardware where a locking washer is called for. It is a general-purpose fastener rather than a fixture-specific part, so confirm the size fits your fixture's threaded hardware before use.

Installation and Compatibility Checks

Confirm the washer's inner diameter matches the threaded stem or bolt it will be paired with before assembly. Seat it fully against the mating surface for the toothed edge to engage properly, and avoid pairing it with finishes where visible marking from the teeth would be a concern.

Additional Buying Context

Small fasteners like the 90-1804 are worth keeping in stock for fixture repairs, since running short mid-installation causes delays. It is sold individually, so order according to the number of connections in your project, and pair it with matching zinc-plated hardware for consistency.