Black Square Key Clamp Single Swivel for 25mm Box Section, Indoor Use

The black square single swivel joins a 25 x 25mm box section brace to an upright at almost any angle, where fixed square fittings will not line up. It is two square cast sockets joined by a riveted hinge. One socket slides on the upright, which passes straight through it, and the other takes the end of the angled box section. The hinge tilts about 85° up or down from level, and a grub screw in each socket locks the box sections once the angle is set. It suits 25 x 25mm square box section and is malleable cast iron with a black electrophoretic finish, for indoor use only. It is for bracing, infill and frames, not for load-bearing joints. The price shown is for one fitting, with a minimum order of 5.

Why use a square swivel

Any angle, on site. Square tees and elbows hold box section at 90° only. The swivel follows whatever angle your brace actually meets the upright at, so you do not have to work it out in advance or cut angled ends.

The upright carries on. The upright passes through its socket, so the swivel can sit anywhere along a post and the post can continue above and below.

Square on square. Box section sits flat inside the square sockets and cannot twist, so a brace stays upright in its plane once the screws are tight, which round tube fittings cannot promise.

No hot work. No welding, no mitred cuts and no drilled brackets, which saves time on site and keeps the finish whole.

A dark, tidy finish. The black electrophoretic coat suits shop fitting, display frames and furniture, and is for indoor use only.

Where it is used

Shop fitting and display stands, office and reception partitions, café and bar frames, garment rails, shelving, tables and furniture, and any indoor frame built from 25 x 25mm box section.

Specifications

Know its limits

Box sections cannot be joined end to end inside this fitting. The angled box section ends in its socket, and only the upright passes through. It is not designed to carry loads, so do not use it where it holds people's weight or a hanging load. It fits 25 x 25mm box section only and will not grip round tube.

Is the swivel right for the job?

How many do you need?

One for each end of an angled box section that meets an upright. A diagonal brace between two posts needs two, one at each end, unless one end is fixed with another fitting. A sloping shelf on a display frame needs one at each upright it meets.

Choosing the right size

Square key clamps are sized by the outside of the box section. Measure across one face: this fitting suits 25 x 25mm box only. For lighter frames the same swivel is made for 25 x 25mm box section.

Fitting and care

Slide the through socket onto the upright and set its height. Push the angled box section fully into the other socket, swing it to the angle you need, then tighten both grub screws firmly with a hex key. Check the screws after the first week and once a year after that, and touch up scratches with black 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 canopy or display frame, call 01744 520 110 or email sales@industrialsuppliesco.co.uk and we will confirm availability and delivery before you order.