Maytronics - Dolphin Pool Up CB screw KA40X20 - 3354020-A

Maytronics Dolphin Pool Up CB screw KA40X20

This is a genuine Maytronics OEM replacement fastener for the Dolphin Pool Up CB robotic pool cleaner. The KA40X20 designation identifies a pan-head self-tapping screw with a nominal thread diameter of 4.0 mm and a length of 20 mm, used to secure structural panels, housings and internal assemblies on the cleaner’s body. Like all Maytronics fasteners in this family, it is manufactured from corrosion-resistant stainless steel to withstand continuous immersion in pool water and exposure to chlorine and other pool chemicals.

Function and location

Screws of the KA40X20 type are precision fasteners that secure key structural components — such as side panels, top housings and internal brackets — to the main body of the Dolphin Pool Up CB. A correctly torqued screw ensures panels sit flush, internal mechanisms are held in correct alignment, and the cleaner’s watertight integrity is maintained throughout every cleaning cycle.

Models compatibles

This screw is a listed spare part for the Maytronics Dolphin Pool Up CB. The KA40X20 fastener specification (part 3354020 / 3354020-A) appears across a number of Dolphin platforms, including the Dolphin DX3 and DX4 series, reflecting Maytronics’ practice of standardising fastener types across related product families. Always verify your model’s exploded diagram before ordering to confirm fitment.

When to replace

Replace this screw if it shows signs of corrosion pitting, a stripped drive recess, or a deformed thread that prevents correct torquing. A missing or loose screw can allow panel flex, vibration noise during operation, or water ingress into areas that should remain sealed. Proactive replacement during any major service strip-down is good practice.

Per què importa l'autenticitat

Third-party fasteners cut to a similar nominal size rarely match the exact thread-form, head-diameter tolerance or metallurgical specification of the original Maytronics component. An incorrect screw can cross-thread the boss, strip the plastic mounting point permanently, or introduce galvanic corrosion if a different alloy grade is used. Fitting the correct genuine part protects your investment and preserves the robot’s manufacturer warranty.