Spider fittings require minimal maintenance to ensure their longevity and performance. Regular inspections should be carried out to check for any signs of wear or damage, particularly in the bolts and arms. It is also recommended to clean the fittings periodically with a mild detergent and water to prevent build-up of dirt and grime, which can cause corrosion over time. Avoid using abrasive materials that could scratch the surface of the fittings.