No.7 x 25mm Square Drive Csk Self Tapping Screw (AB) in A2 Stainless - DIN 7982
Square drive countersunk head tapping screws are suitable for use with sheet metal and plastics. The square drive makes 'cam-outs'
or screwdriver slips less likely, as the driver connects more securely than a pozi or a phillips drive. These square drive tapping
screws are manufactured similar to DIN 7982C.