Beskrivelse
M4 sekskantindvendige skrue med kegleformet spids, galvaniseret stål
Grub Screw is one of fastener style for securing objects without head support , it is named set screw as well , Cone point for grub screw has two different angle 120°and 90°normally and full threads from one end to another end .
Grub screw without head design and do not need a nut for securing , the specifications cover from M1.0 to M 22 ( the major diameter ) .
