Nut, Spring, #8-18, Years: 11/01/1977-05/31/1982

Used in models:550, 555, 655A, 555B, 555A, T7030, 4130NO, T6030, T6050, 3230, TW20, TM150, TM130, TM190, TS115A, 8630, 8000-SERIES, TS130A, TM140, TW5, TM155, 3430, 3930N, 6640, TW10, TW30, 7840O, 9000-SERIES, T6040, 3930NO, T6020, TM120, TS110A, 6710, TS100, 8530, TW25, 8830, T6010, T7050, 6700, T6070, 4630NO, TS135A, 7910, 8240, 8210, 7700, 8700, TS100A, TM115, TM175, 3930H, 5640, TS125A, TM165, T7040, 8340, TM125, TW15, T7060, 9700, 7740, 5700, 7710, TM135, TS90, TW35, T6060, 7610, 4630O