Swimables Pilot Screw with Gum Washer 79104800 for Pentair Pool & Spa Light | SW-70-355

The Swimables SW-70-355 pilot screw with gum washer is a corrosion-resistant fastener designed for Pentair-style underwater light niches. Crafted from 316-grade stainless steel, it offers excellent performance in both saltwater and chlorinated pools. The captive gum washer beneath the screw head ensures a tight moisture barrier, protecting the light fixture and electrical components. Precision-machined threading with an anti-cross-thread pilot tip guarantees smooth installation and long service life. Designed as a direct replacement for part numbers 619355 and 79104800, the SW-70-355 maintains proper sealing and grounding in stainless niche assemblies.

Highlights

• High-Strength 316 Stainless: Delivers exceptional corrosion resistance and mechanical durability for pool-light applications.

• Watertight Gum Washer: Built-in washer prevents water intrusion around the light lens and gasket area.

• OEM-Compatible Fit: Interchangeable with Pentair part numbers 619355 and 79104800 for easy replacement.

• Thread Protection Tip: Pilot screw design reduces cross-threading and enhances installation reliability.

• Ideal for Harsh Environments: Suited for stainless light niches exposed to chlorine, salt, and moisture.

Additional Info

The Swimables SW-70-355 pilot screw with gum washer is a premium replacement part designed for online customers maintaining Pentair-style underwater light fixtures. Built from marine-grade 316 stainless steel, it offers high corrosion resistance and watertight security for both salt and chlorine pools.

Premium Stainless Construction

This screw’s 316 stainless body withstands pool chemicals and corrosion, ensuring dependable fixture security. Ideal for homeowners seeking a lasting, direct-fit light screw solution.

How does 316 stainless steel resist corrosion over time?

Why is stainless hardware essential for underwater lighting?

What makes this fastener suitable for saltwater and chlorine pools?

Built-In Gum Washer Seal

The captive gum washer provides a moisture-tight seal, preventing leaks and extending the lifespan of gaskets and electrical components. It also maintains fixture safety and stability.

How does the gum washer improve water sealing and protection?

What signs indicate the washer needs replacement?

Why is sealing critical for safe underwater lighting?

Easy Online Replacement Compatibility

The SW-70-355 replaces Pentair part numbers 619355 and 79104800 directly. Its pilot-style threading ensures smooth, guided installation for homeowners performing DIY light maintenance.

Which part numbers are supported by this screw?

How does the pilot tip make installation easier for DIY users?

What are the steps to safely replace a pool light screw?