my country’s modern characters are simplified from the previous traditional characters. According to the word creation table: the word "snail" comes from describing an aquatic animal. Screws are a derivative of modern industrialization and have nothing to do with their field. So! The radical of the word "snail" is the imagination of the ancient character creators and has nothing to do with screw nails!
Snail?
luó?
A mollusk with a cone-shaped, spindle-shaped or oval hard shell with spiral patterns on it: snail, Field snail, conch, conch horn, mother-of-pearl, Dharma conch (Buddhist musical instrument made from conch shell). ?
Threads like conch shells: threads, spirals, screws, nuts, bolts, screw buns (ancient women’s hair shape resembled conch shells). ?
Same as "崶". ?
Related classical Chinese:
胃胃, 胃胃 also. ——"Shuowen". The common word is snail. ?
Living... is a coward. ——"Yi·Shuo Gua"?
Their people will move to the shore of the East China Sea. ——"Guoyu·Wuyu". Note: "The genus of clams."?
There is no reason for the crown to be like a cockroach. ——"Huainanzi·Benjing"?
Snail, mussel. ——"Guangyun"?
The boat is shaped like a snail and sinks to the bottom of the sea. ——Wang Jia's "The Supplementary Notes of the First Emperor of Qin"