With vise grips you may be able to get a good enough grip on what's left of the bolt to remove it. Locking wrench vise grips are best suited to give you maximum grip on a hex bolt. The second best vise grip for removing a nut or bolt are straight jaw vise grips.
|Manufacturer / Model||Image||Reviews||Price||Average Customer Rating||Length||Minimum Jaw Capacity||Maximum Jaw Capacity|
|61||$10.19||4.5||4 in||0.25 in||0.5625 in|
|37||$15.0||4.8||10 in||0.625 in||1.125 in|
|43.0||$8.68||4.8||7 in||0.4375 in||0.75 in|
|132||$12.97||4.6||10 in||1.75 in|
You can file down opposing edges of a bolt or nut so that there are 2 flat edges and then try vice grips again. This may be enough to give the vice grips enough of a bite.
|Image||Price||Reviews||Average Customer Rating|
|$7.35||60||Property error: Expression: * Home Depot Reviews Error: #<Dentaku::ParseError: Invalid statement> Datum ID: 2509|