I wouldn't torque that stud more than 8 lb-ft or so. Those studs are pretty weak. Looking at the pic again it looks like the threaded part is broken off in the head. It can be drilled and removed with a stud extractor if you know what you're doing and are careful. Take it to a machine shop if in doubt, so you don't make things worse.
2004 Rebel 250, 2003 BMW K1200GT (roadburner), 2004 BMW R1200GS(all purpose),
1996 Ducati 900SS CR (California Bike), 1973 Norton Interstate (in a box in the basement)