This bolt is shown as ref # 64 at the bottom right of the pump illustration shown here.

Product Details:

• M10 X 16 Bolt
• Made by Hypro
• Part # 9910-820670
• This is a Replacement Part for the Following Pump Model #s: 9910-D30, 9910-D30AP-A, 9910-D30GRGI, 9910-D30-B-GRGI, 9910-D303, 9910-D303GRGI, 9910-D403, 9910-D403GRGI, 9910-D50, 9910-D50AP-A, 9910-D50-B, 9910-D503 and 9910-D503GRGI
• 4 Parts Required per Pump