Thumb Screw, M6-30 Thread Size, Wing, Stainless Steel, 20 mm Head Ht, 30 mm Lg, Elesa, Mfr#: EWN-SST-p$3.89+
Thumb Screw, 1/4"-20 Thread Size, Wing, Zinc Plated Steel, 0.79 in Head Ht, 3/4 in Lg, Elesa, Mfr#: EWN-p (inch sizes)$2.55+
Stainless steel clamping element, threaded screw, ERM.44 SST-p-M6x50-C9, Elesa, Mfr#: ERM-SST-p$11.39+