Screw, Tap, HWH, 1/4"-20x1/2", Start Year: 12/01/1988

Used in models:345D, 550, 345C, 545D, A64, 555, A625, 655A, A66, 555B, 445C, 545C, 555A, 4610SU, 455, 7610S, 7810O, 3010S, TB90, 8630, 5610, TW5, 334, 7810S, 335, TB85, 6810S, 3910R, 4010S, TB100, 3910N, 2910, 7010, TB110, 4110, TB80, 7610O, 3610, 2610, 2610V, 5610S, 3610NO, 6710, 8530, 5010S, TW25, 8830, 3910H, 6410, 3610V, 530A, 5900, 7910, 8210, 6610O, 230A, 8010, 6610S, 4610O, 4110O, 2310, 5110, 234, TB120, TW15, 7710, 4110N, 7410, TW35, 2810