This item is highlighted as #73 on the product illustration at the bottom.

View a picture of the NGP 5050, 8050 and 9050 pumps this item goes with by clicking the thumbnails on the left.

This hex bolt is part # 90911, measures 3/8" x 16" x 1", and goes with John Blue's NGP 5050, 8050, and 9050 series piston pumps.