Key Clamp 90° Corner Double Swivel for 60.3mm Tube, Sloping Rail Corner Fitting, Galvanised, Size E

A corner fitting for 60.3mm tube with two sockets that swivel, for angles a fixed or simple adjustable fitting cannot reach. A central ring goes on the post, and a socket hinges from each side of it at 90 degrees to the other. Each swivel moves about 85 degrees up or down from level. Three hex socket grub screws hold the post and the two rail ends. It suits 60.3mm outside diameter tube, sold as 50mm nominal bore, and is galvanised malleable cast iron, supplied as a riveted assembly. The price shown is for one fitting, and you can order just one.

Why a double swivel works

Two rails, two angles. Each socket moves independently of the other, so a corner where the two rails rise or fall at different slopes can be made with one fitting.

For the awkward joints. Use it where a fixed tee or an adjustable angle fitting cannot match the geometry, such as a change of slope at a corner.

No welding. The joint is set with a hex key, with no hot work and no galvanising to repair.

Where it is used

Corners on sloping guard rails and ramps, changes of level at the corner of a platform or stair, and other difficult applications where the rail angles cannot be accommodated by a standard adjustable fitting. Each socket travels approximately 85 degrees from the horizontal in both vertical directions, and the swivel is a hinge, not a structural brace.

Specifications

Choosing the right size and part

Measure the outside of your tube with a caliper rather than relying on a nominal bore size on a delivery note. This fitting is for tube that measures 60.3mm across, sold as 50mm nominal bore. The bore is cast to that size, so a smaller or larger tube will not grip properly.

See the full range of galvanised key clamp fittings.

Fitting and care

Cut every tube square and remove any burr. Slide the post through the central ring and set the height, push each rail end fully into its socket and swing the sockets to the angles you need. Tighten each grub screw with a hex key until it bites firmly, and do not overdrive it. The swivels are not designed to carry lateral loads, so the rail run must be supported on posts either side of the corner.

No load rating is published for this line. If the frame has to meet a design loading, have it assessed by a competent person before it goes into use.

Check the grub screws during routine inspections of the frame, especially where it is exposed to vibration. Galvanising needs no routine care in normal conditions, and any cut tube ends or damaged areas can be touched up with a zinc-rich paint.

Frequently asked questions

Ordering and delivery

Order online, with Express UK Delivery to your site and same-day dispatch on orders before 2pm, Monday to Friday. For a larger job, call 01744 520 110 or email sales@industrialsuppliesco.co.uk and we will confirm availability and delivery before you order.