Small hardware can make a major difference in how securely a pressure cleaner drive assembly stays together. This 10-32 x 7/8" front axle screw with washer is designed for Polaris/Zodiac 3900 cleaner service where the correct fastener fit is important for alignment, stability, and long-term operation.Use this replacement screw when the original hardware is worn, missing, corroded, or damaged during repair. Matching the correct screw and washer helps protect nearby cleaner components and keeps the axle area properly secured after maintenance. Replacement front axle screw with washer for Polaris/Zodiac 3900 cleaners 10-32 x 7/8" sizing supports proper fit in the intended assembly Useful for cleaner rebuilds, axle repairs, and routine service work Helps secure moving components where vibration and water exposure are common OEM-style part number 48-045 for easier identification and ordering