How to Remove Headless car Bolts

Removing car  studs

Studs are headless bolts threaded  at both ends with plain metal  between  or threaded along their whole  length. 

On the type with a thread at both ends, clamp self-locking   grips  on the plain section to undo the  stud section.

 Where there is no threadless section,  screw  a pair of nuts  on the  stud  and  tighten them to lock  against  each  other You  can then use  a spanner on  the lower nut to extract the stud in the same  way  as undoing  a bolt. see fig 1