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T.S.F. rod ends are "female" type ends, i.e. they have a threaded hole. They are mainly used for universal applications. They may or may not be fitted with a grease nipple. They are available with both right-hand and left-hand threads.
There are two main types of T.S.F. rod ends:
TSF" type rod ends have right-hand threads. Left-hand threads are available under "TSFL".
There are two main distinctions between "TSF" and "SI" rod ends: