HiKOKI 949422 M3 Washers supplied as a pack of 10 for compatible Hitachi and HiKOKI demolition hammers and gas nailers. These replacement washers fit beneath the relevant M3 fasteners to provide the correct seating surface and help distribute fastening load across the assembly. Suitable for replacing worn, damaged or missing original washers and manufactured to the correct specifications for precise fit. Part 949422 replaces previous part number 949422Z.