Abstract: A snap fastener stud (S) for accommodating receivers (R) of varying thickness has a generally pear-shaped head with latching and retaining seats (38 and 40) therebeneath on opposite sides of the stud with the retaining seat having a radius of curvature (t) substantially greater than the radius of curvature (r) of the confronting surface of the receiver (R). In a modification the stud is capable of receiving a plurality of receivers (R.sub.1 and R.sub.3). The receivers may be formed with an annulus (72) which is separate from the portions (86 and 88) which are crimped to the fabric (F). The stud (S) has ribs (116) for preventing rotation on a surface on which the stud is mounted and a saddle shaped adapter (110) enables mounting of the stud on a cylindrical support (TF).