... head bolts, coach bolts, carriage bolts, hanger bolts, etc ), kinds of screws( self-drilling screws, lag screws, chipboard screws, drywall screws, wood screws ... , etc.), kinds of nuts( hexagon nuts, lock nuts, hex coupling nuts, flange nuts, square nuts, etc.), flat ... in anchor 1. Countersunk head2. Round head .3.If you are interest in ...