Clamps offer extra holding power in high-torque applications.

Also known as ground-joint couplings and boss couplings, these fittings are designed for high-pressure steam applications up to 600 psi. Insert the barbed end of the fitting into hose, then position the interlocking clamp over the hose and bolt into place. The clamp firmly grips your hose as it locks into the ring of the barbed end, creating a leak-tight seal.

To avoid gouging and marring your pipe while making adjustments, these collars have flats where you can grab and rotate the pipe with a wrench. They're sized precisely for a tight fit around pipe, so they're often used to support pipe passing through floors and walls.

Load material between the two halves of the ring and adjust the side bolts for a tighter fit than standard threaded-rod-mount clamping hangers.