The Pentair A135 hex bolt is designed for compatible EQ1000, EQ1500, and EQ750 applications and measures 3/8 inch-16 by 3/4 inch. A fastener like this is useful because it helps secure related pump components correctly and supports proper assembly retention where the right hardware matters.Replacement is often needed when the original bolt is stripped, rusted, bent, or lost during service. Installing the correct Pentair hardware can help restore proper fit and reduce the risk of assembly problems caused by mismatched bolts.This OEM hex bolt is a practical service item for compatible EQ pump systems that need the correct replacement fastener during maintenance or rebuild work. OEM Pentair hex bolt 3/8 inch-16 x 3/4 inch size Fits compatible EQ1000, EQ1500, and EQ750 applications Useful when the original bolt is damaged or missing Supports cleaner and more dependable pump assembly service