screw thread

Fastener's helical ridge

A screw thread is the helical ridge that spirals around a screw, bolt, or the inside of a nut, allowing parts to fasten together when turned.

The thread converts rotational motion into linear clamping force.

Threads are characterized by their pitch (distance between ridges) and profile: The screw thread was stripped, so the bolt wouldn't tighten.

Related
  • helixSpiraling three-dimensional curve
  • dieStop being alive
  • spiralCurve winding around center
  • twistRotating motion or surprise
  • coilWound circular arrangement

worm gear · inclined plane · mechanical advantage · nut and bolt · lead · tap · root · crest · flank · fasteners · whorl · pitch · rib · profile · machine · bore · shaft · tighten

Categories
Opposites
surface texture/profile

screw threadpolished surface

Smooth, lustrous exterior

blank · dowel

fastening mechanism type

screw threadpress fit

Assembly through dimensional interference

friction fit · weld · rivet · snap fit · solder joint

Family

screw, thread, threads, screwed, screwy, unscrew, threadbare, screwball, screwdriver

Familiarity
Top 20,000
Profile
Used worldwide · Timeless · Concrete · Everyday, not technical · Rated G