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Bulbtite

Bulb-Tite® is the original load spreading rivet. During installation, the body of the rivet folds into 3 separate legs which creates a large bearing surface and distributes the clamp force allowing soft or thin materials to be joined without damage. The mandrel of the rivet will break flush with the head over a wide grip range which results in impressive shear strength. BT Rivets are usually supplied with a neoprene washer under the head for a weather tight seal.