Cylinder Head Stud 7/16" x 1 11/16" UNF Models 165, 168, 174, 175, 178, 184, 185, 188, 240, 255, 265, 274, 275, 283, 284, 285, 290, 294, 298, 365, 375, 383, 390, 390T, 393, 398, 399, 4360, 50E, 50H, 565, 575, 590, 595, 6500, 6530, 6550, 670, 675, 6840, 690, 698, 698T, 699, 7500, 7550, 7830, 7860, 8500, 8860, A4.212, A4.236, A4.248, T4.236, 440