Thomas Screw - #6-32 x .24" Thread Rolling (Valve Flapper) - Bulk package of 25. Compatible with standard Thomas 118, 2117, 2650, 2660, 2665, 2668, 2669, 2680, 2685, 2688, 2689, 668, 669, 688, 660, 680, 689, T-617, T-618 models.