WScrew
WAnchor bolt
WArchimedes' screw
WBacklash (engineering)
WBall screw
WBerry Brothers Bolt Works
WBolt (fastener)
WButtress thread
WCarriage bolt
WCarriage bolt
WComputer case screws
WDifferential screw
WDimpler
WFine adjustment screw
WHelix angle
WHex key
WInterrupted screw
WJackscrew
WLead (engineering)
WLeadscrew
WNut (hardware)
WJohn Penn (engineer)
WPentalobe screw
WPentalobular screw thread
WHenry F. Phillips
WP. L. Robertson
WRoller screw
WScrew extractor
WScrew pump
WScrew thread
WScrewdriver
WSelf-tapping screw
WSelf-tapping screw
WSet screw
WSquare thread form
WThread angle
WThread-locking fluid
WTorque screwdriver
WTorx
WTrapezoidal thread form
WTreehouse attachment bolt
WU-bolt
WScrew
WWrench size
WYankee screwdriver