18-8 Stainless Steel Sheet Metal Screw, Plain Finish, Pan Head, Phillips Drive, Type A, #10 Thread Size, 1 3/4" Length (Pack of 50) (Fits Tuf-Tite Risers and Lids) Type A point has a conical tip and spaced threads 18-8 stainless steel provides good corrosion resistance and strength. Pan head has a flat top and short vertical sides with a rounded top edge Phillips drive has an xshaped slot that accepts a Phillips driverdesigned to prevent over-tightening Perfect For Tuf-Tite Risers & Tuf-Tite Lids, as well as many other applications.