feature:1.high clamp strength: the T rivet will draw sheets firmly together, even when separated by as much as 3/16"2. high shear strength: the hard end mandrel in the T rivet provides high shear strength and shear comparable with solid aluminum rivets or machine screws.3. creats a wide bearing surface4. vibration resistant: the T rivet will with stand severe vibration without loss of the mandrels plug section