Key Clamp Swivel Angle Wall Flange for 33.7mm Tube, Galvanised

The swivel angle wall flange fixes the end of a sloping tube to a wall, at whatever angle the stair or ramp sets. A flat plate screws to the wall through two 11mm holes. A hinged socket on a bolt swings about 85° up or down from the horizontal, and the tube end pushes into the socket and is locked with a grub screw. It is the fitting for the wall end of a raked handrail or sloping brace on guard rails. It is malleable cast iron with a galvanised finish for indoor and outdoor use. The price shown is for one fitting, with a minimum order of 5.

Why use a swivel angle wall flange

Any slope at the wall. A fixed wall flange only holds a tube square to the wall. The hinge lets a stair or ramp rail meet the wall at its true pitch, with no bending or angled cutting.

A neat, closed end. The rail end sits inside the socket, so there is no open tube end at the wall and no sharp edge.

Simple fixing. Two screws or anchors through the plate, one bolt for the hinge and one grub screw for the tube. The angle can be reset by loosening the bolt.

Galvanised for outdoors. The zinc coating protects the iron on yards, sites, ramps and walkways in all weathers.

Where it is used

The wall end of external stair and ramp handrails, sloping braces and stays from walls, and angled rails on access ramps, loading docks and platforms.

Specifications

Know its limits

This is a wall fitting for angled rails. It must never be used as an angled base fitting to stand a guardrail post on the floor, and it is not designed to take lateral loads.

Which 33.7mm swivel wall flange?

For the post end of the same sloping rail, use a 33.7mm single swivel socket, and for rails along the wall a 33.7mm wall flange.

How many do you need?

One at each point where a sloping tube meets a wall. A stair handrail fixed to the wall at the bottom and to a post at the top needs one swivel wall flange and one swivel socket.

Choosing the right size

Key clamps are sized by the tube's outside diameter. 33.7mm tube is often sold as 1" or 25mm nominal bore. Measure across the tube before ordering: this fitting will not grip 26.9mm or 42.4mm tube. The same galvanised fitting is made for 26.9mm, 42.4mm, 48.3mm and 60.3mm tube.

Fitting and care

Mark the plate position, drill and fix it to sound wall with two screws or anchors to suit the wall. Push the tube fully into the socket, set the angle, then tighten the hinge bolt and the grub screw. Check the bolt and screw after the first week and once a year, and touch up scratched galvanising with zinc-rich paint.

Frequently asked questions

Ordering and delivery

Order 5 or more online, with Express UK Delivery to your site and same-day dispatch on orders before 2pm, Monday to Friday. For a full rail kit, call 01744 520 110 or email sales@industrialsuppliesco.co.uk and we will confirm availability and delivery before you order.