Abstract: A T-bolt clamp includes a circumferentially extending band and a fastening assembly that employs a T-bolt to tighten the clamp by turning a nut to draw loop ends of the band toward each other. One of the loop ends includes a slotted opening that permits a head of the T-bolt to be inserted and removed without removing the nut from the T-bolt. The fastening assembly is configured to constrain first and second bearing loops of the slotted loop end against movement away from each other during tightening of the clamp. Protrusions on the head of the T-bolt can be used to perform the constraining function by engaging slots in the bearing loops.

Abstract: A pipe clamp with a band and a worm drive mechanism that provides a fluid-tight seal at a joint involving one or more metal pipes. The worm drive mechanism includes a screw and a housing. The housing has an end wall located opposite a head of the screw. The end wall at least partially encloses a terminal end portion of the screw. Surface-to-surface abutment between the terminal end portion and the end wall during tightening precludes deformation of the housing that might otherwise be experienced.