A control member for use in a fluid control device is disclosed. The control member may include a through-bore for receiving a valve stem and one or more counter-bores aligned with the through-bore. One of the counter-bores may receive a connection member, such as a retaining nut, for connecting the control member to the valve stem. Accordingly, the connection member may be concealed within the control member and thus prevented from interfering with the fluid flow around the control member. Also disclosed is a fluid control device incorporating the control member and a method of assembling a fluid control device incorporating the control member.