screw threads
Fastener's gripping ridges
Screw threads are the helical ridges that wrap around a screw, bolt, or the inside of a nut, allowing parts to fasten together when turned.
The threads convert rotational motion into linear clamping force.
Thread specifications—pitch, diameter, angle—must match between mating parts: The screw threads were stripped, so the bolt wouldn't tighten.
- helixSpiraling three-dimensional curve
- fastenersDevices joining materials
- boltsThreaded metal fasteners
- hex boltSix-sided headed fastener
- flankSide of body
pitch · crest · lead · nuts · depth · tensile strength · profile · angle · tight fit · UNC · root · countersunk · sheet metal · precision engineering · industrial standards · washers · load capacity · mechanical systems
screw threadspress fit
Assembly through dimensional interference
friction fit · rivet · welded joint · snap fit · pin
screw, thread, screws, threads, screwed, screwing, screwdriver, threaded, threading