282775A1 Five (5) Ignition Key Switches Fits Case 760 921 1150G 1845C 5230 85XT model-917.256524 at larger end: 2

at larger end: 2

Dim (B) 42

Style: Round cutout assembly

Fits Ford/New Holland Industrial Tractor Models 234

This is the manual that came with your 621B when it was new

282775A1 Five (5) Ignition Key Switches Fits Case 760 921 1150G 1845C 5230 85XT model-917.256524 at larger end: 2Set of Five New Aftermarket Replacement Ignition Switches with Keys Fits Case Models: 1080B, 1150G, 1150H, 1550, 1835B, 1835C, 1840, 1845B, 1845C, 2366, 2394, 2594, 3394, 3594, 4494, 4694, 480F, 5120, 5130, 5140, 5220, 5230, 5240, 5250, 550G, 570Lxt, 580 Super E, 580 Super K, 580 Super L, 580D, 580K, 580L, 584E, 585E, 586E, 588G, 590, 590 Super L, 590 Super M, 621, 621B, 650G, 660, 680K, 680L, 7110, 7120, 7130, 7140, 7150, 7210, 7220, 7230, 7240,