There are three major thread types for grease fittings: metric, taper or parallel, and unified. M5, M6, M7, M8, and M10 are common metric threads. British standard pipe (BSP), pipe thread fine (PTF), ...
Threading tools and attachments are used with the taps that are used to cut the female thread. There are many types of threading tools and attachments. Examples include a cutting threading tool, pipe ...