Key Clamp Short Tee with Swivel for 42.4mm Tube, Stair to Landing Rail, Galvanised, Size C

The short tee with swivel joins a sloping stair rail and a level landing rail to the same post, at whatever angle the stair sets. The post passes straight through the middle of the fitting. The level rail pushes into the fixed socket on one side, held by two grub screws, and the stair rail pushes into the swivel socket on the other side, which turns on a riveted hinge to follow the pitch of the stairs and is locked by its own grub screw. It is the usual brace fitting where a staircase top rail meets a level section. It suits 42.4mm outside diameter tube, the usual size for handrails, and is malleable cast iron with a galvanised finish for indoor and outdoor use. The price shown is for one fitting.

Why use a short tee with swivel

Stair meets landing in one fitting. The level rail and the sloping rail both join the same post at the same height, so the change of direction is neat and strong.

Any stair pitch. The swivel follows the angle of the stair, so you do not need to order to an exact pitch or cut angled joints.

The post carries on. The post passes through, so it can continue up for a top rail or down to its base.

No welding. Everything goes together with a hex key and can be adjusted on site.

Galvanised for outdoors. The zinc coating protects the iron on external stairs, fire escapes and plant platforms in all weathers.

Where it is used

Where stair handrails and guard rails meet level landings on external steel stairs, fire escapes, mezzanine and platform stairs, plant room access stairs, and as a brace between a sloping and a level rail on any 42.4mm tube frame.

Specifications

Know its limits

Tubes cannot be joined within this fitting: each rail ends in its socket and only the post passes through. No load rating is published, so for a stair or landing rail that must meet a set load, ask a structural engineer to check the design.

Which 42.4mm stair fitting?

How many do you need?

One at each post where a stair rail meets a level rail. A stair with a landing at the top needs one at the top post for each rail height: two for a two-rail guard rail.

Choosing the right size

Key clamps are sized by the tube's outside diameter. 42.4mm tube is often sold as 1¼" or 32mm nominal bore. Measure across the tube: this fitting will not grip 40mm or 48.3mm tube. The same fitting is made for 48.3mm tube.

Fitting and care

Slide the fitting onto the post and set its height. Push the level rail into the fixed socket and the stair rail into the swivel socket, swing the swivel to the stair pitch, then tighten all grub screws firmly with a 5/16" hex key. Check the screws after the first week and once a year, and touch up scratched galvanising with 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 full stair rail, call 01744 520 110 or email sales@industrialsuppliesco.co.uk and we will confirm availability and delivery before you order.