Re: Johnson A50 A A25 shear pins Home › Forum › Ask A Member › Johnson A50 A A25 shear pins › Re: Johnson A50 A A25 shear pins The Boat HouseReplies: 4550Topics: 111 June 6, 2018 at 10:57 pm #77557 I drill out the prop shaft another 64th to 5/16. The prop seem to accept the slightly larger pin OK.