A versatile swivel fitting, often used for braces and where staircase top rails join level sections. 

90 degree elbow with lug.

The upright passes through the fitting.

Used with other fittings to increase slip load capacity or to support other fittings which are left to rotate freely on tube.

Usually used where chains need to be easily removed for access. The tube cannot be joined within the fitting.

Usually used to form roof structures in conjunction with type TF191, with an angle of 27½°. 

Usually used to form roof structures in conjunction with type 185, with an angle of 27½°. 

This shield fits over type TF132.

Often used for mounting boards practically flush with tubes.

Often used for mounting boards practically flush with tubes.

The through tube (sloping in photo) cannot be joined within the fitting. The assembly is riveted together, although items can be supplied separately as TF173M and TF173F. Warning: To provide sufficient stability, whole structures must not be made from swivel fittings alone.