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

The Swimables SW-70-355 is a premium 316-grade stainless steel pilot screw engineered for pool-light mounting applications, featuring a captive gum washer for a watertight seal. Manufactured to fit industry standard part numbers (619355 / 79104800) in many Pentair-style light niches, this screw offers superior corrosion resistance in demanding pool environments. Ideal when replacing corroded or compromised screws in stainless-niche installations, the SW-70-355 simplifies maintenance and supports long-term fixture integrity.

Highlights

• Marine-Grade 316 Stainless Steel: Built to withstand chlorine, salt, and outdoor conditions for long-lasting durability.

• Captive Gum Washer Included: Provides a secure seal beneath the screw head to minimize moisture ingress behind the light lens.

• Direct Replacement Compatibility: Designed as a drop-in replacement for part numbers 619355 and 79104800 in Pentair-style pool lights.

• Anti-Cross-Thread Pilot Tip: Precision-machined tip reduces risk of thread damage in light housing installations.

• Ideal for Stainless Niches: Especially recommended for use in stainless light niches to maintain proper grounding and prevent thread galling.

Additional Info

The Swimables SW-70-355 pilot screw with gum washer is a precision stainless-steel fastener engineered for Pentair-style underwater light niches. Built for durability and easy in-store replacement, it combines strength, corrosion resistance, and a watertight seal for dependable lighting performance.

Durable 316 Stainless Steel Build

Crafted from high-grade 316 stainless steel, the SW-70-355 withstands long-term exposure to pool chemicals and saltwater. Its structure resists rust and surface wear, ensuring lasting performance for pool-light assemblies.

How does 316 stainless steel enhance durability in pool environments?

What makes this screw ideal for in-store light fixture repairs?

How can corrosion resistance improve fixture longevity?

Watertight Gum Washer Seal

A captive gum washer beneath the screw head ensures a moisture-tight seal. This design keeps water away from light gaskets and electrical areas, supporting safe and stable operation.

How does the gum washer prevent light fixture leaks?

What benefits does the washer provide for sealing and grounding?

How can technicians verify a proper watertight fit?

Compatible Fit for Pentair Niches

The SW-70-355 replaces Pentair part numbers 619355 and 79104800 with a direct-fit design. Its pilot-style threading reduces cross-threading during installation and aligns securely with stainless niche fixtures.

Which Pentair light models are compatible with this screw?

Why is thread precision important in light niche assemblies?

What tools ensure smooth installation and tightening?