Multitrade Malta BTUBE176B - Side Outlet Tee 176-A (33.7mm) Tube Clamp or Key Clamps for 33.7mm hand rail tube. This malleable iron casting is also available in 26.9mm tube clamps, 42.4mm tube clamps, 48.3mm tube clamps, and 60.3mm tube clamps. Complies with B.S. EN1461. And are also known by the term pipe clamps. Three way tee used to join 3 tubes at 90° to each other with the vertical passing through the fitting. Typical use would be on structures such as market stall or play frames. All clamps come with stainless steel grub screws fitted. If full tightened using a ratchet key to a torque of 4.1kg/m (29ft/lb), the grub screw is capable of withstanding an applied slip load of 900kg