V thread

noun

variants or less commonly vee thread

: a screw thread having a thread angle of 60 degrees with the bisector of the angle being perpendicular to the axis of the thread and the crests and roots of the threads being lines formed by the intersections of the sides

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

• More than 250,000 words that aren't in our free dictionary
• Expanded definitions, etymologies, and usage notes
• Advanced search features
• Ad free!