(11/64-40) L=6mm HD=7.5mm Plate Screw for Singer Industrial Sewing Machine Classes: 16, 20U, 31, 44, 52, 68, 69, 78, 95, 96, 110, 111, 112, 114, 134W, 167, 195K, 196K, 211, 212, 231-4, 241, 245, 251, 253, 261, 269W, 270CL,281, 291U,  307G, 331K, 366K, 369W, 391U, 400W, 402W, 410W,  451K, 491, 600W & 770.

Consew Classes: 18, 28, 30, 225 & 226.