Square Key Clamp Footplate Base for 25 x 25mm Box Section, Four-Hole Floor or Wall Flange, Galvanised

The square footplate base fixes a 25 x 25mm box-section upright to a floor or wall on a square plate with four fixing holes. The box section pushes into the square socket and one grub screw on the front locks it. Screw or bolt the plate down through its four 7mm holes and the upright stands square, ready for rails, shelves or panels. It is the usual start and end point for light square-tube frames: display stands, shop fittings, garden structures and small barriers. It is malleable cast iron with a galvanised finish for indoor and outdoor use. The price shown is for one base, with a minimum order of 10.

Why use a square footplate base

Square on square. The box section sits in a square socket, so the upright cannot twist and frames stay true.

Four fixings, close to the corners. The holes sit on 52mm centres, spreading the fixings across the 74mm plate.

Floor or wall. The same base starts an upright on a floor or ends a rail against a wall.

No welding. Fix the plate, push in the box section and tighten one screw with a hex key. The upright can be lifted out later.

Galvanised for outdoors. The zinc coating protects the iron on garden frames, stalls and yards.

Where it is used

Shop and garden centre display stands, light shelving and staging, market stall frames, small barriers and queue rails, garden structures and planters in square box, and rail ends fixed to walls.

Specifications

Know its limits

This base is for light square-tube frames. It is not a structural post base, and no load rating is published, so for barriers or frames that must carry a set load, ask a structural engineer to check the design and the fixings. It fits 25 x 25mm box only and will not grip round tube.

Which 25mm square fitting goes where?

How many do you need?

One under each upright that stands on the floor, plus one at each rail end fixed to a wall. A simple four-legged display stand needs four.

Choosing the right size

Square key clamps are sized by the outside of the box section. This base suits 25 x 25mm box; measure across one face before ordering. For heavier frames in 40 x 40mm box, use the 40mm square footplate base.

Fitting and care

Mark the plate position, drill and fix it to a sound floor or wall with four screws, anchors or bolts up to 7mm, to suit the surface. Push the box section fully into the socket and tighten the grub screw firmly with a hex key. Check the screw and fixings after the first week and once a year, and touch up scratched galvanising with zinc-rich paint.

Frequently asked questions

Ordering and delivery

Order 10 or more online, with Express UK Delivery to your site and same-day dispatch on orders before 2pm, Monday to Friday. For larger quantities, call 01744 520 110 or email sales@industrialsuppliesco.co.uk and we will confirm availability and delivery before you order.