I did a search on Autozone's site and came up with Dorman brand part# 610-262 for front and part# 610-261 for the rear both for $0.99 but was a special order. Hope you can use the part# for other local vendors that might be to busy(lazy) to look in catalog.
I also had the same problem as fabrisuzo, one week after I purchased my Isuzu I went and got new tires. I was then told that it needed front brakes, no problem I'll do it myself. Long story short after breaking two studs I took it back to my reputable tire store and 22 broke studs and 2 studs cut off with sawsall later I had new studs and lugs. The service manager had a hard time handling this as they use a torque wrench on all tire installs.