ナ is a variant of hand 手. Characters formed by the component ナ express things related to hand or extended meanings.
手 is one of the most powerful components that can form up to more than 700 characters. 手 has more than 10 forms, among which 扌 is the most common one.
See also all the other variants of 手
Characters formed by the component ナ
有, 友, 灰, 右, 卑 yǒu, yǒu, huī, yòu, bēi