This hex nut with washer is designed to use with Hayward StarLite Series Underwater Lights and accessories models SP0540, SPO541, SPO542, SPO543, SP0550, SP0551 and also compatible with Hayward U L junction box, Anchor Socket models SP0680, SP1392.

• Hex nut replacement
• Fits hayward starlite series underwater lights models sp0540, sp0541, sp0542, sp0543, sp0550, sp0551
• Also fits hayward u l junction box, anchor socket models sp0680, sp1392