What are Key Clamps?
Key Clamps: A Versatile, Weldless Solution
Key Clamps offer a modular, weldless steel tube and fitting system designed for constructing a wide range of structures using standard-sized, widely available steel tubing.
Renowned for their versatility and ease of use, Key Clamps are ideal for creating handrails, balustrades, barriers, and even custom furniture. This system provides a practical, efficient solution for projects across commercial, private, and DIY applications.
Whether you’re undertaking a large-scale commercial installation or a small personal project, Key Clamps provide a reliable and straightforward method for achieving durable, professional results.
Heres the official, GEEKY description…
Our Key Clamp fittings are a blackheart malleable iron casting manufactured to BS EN 1562:1997 using grade B32-10 material with a hot dipped galvanised finish to BS EN 1461:1999.
how does sizing work?
Key Clamp Fittings are available in five standard sizes designated by the suffix A27, B34, C42, D48 and E60 at the end of the SKU. The standard tube sizes are given in the following table.
how do they join together?
All of our fittings are supplied with stainless steel grub screws. The grub screws can be tightened with an Allen (hex) key, or fully tightened using a ratchet key to a torque of 4.1kg/m (29ft/lb) – when this is applied the grub screw is capable of withstanding an slip load of 900kg.
Key Clamp Size Guide
Size Reference
A27
B34
C42
D48
E60
Tube Diameter
26.9mm
33.7mm
42.4mm
48.3mm
60.3mm
Nominal Bore
3/4″
1″
1.1.4″
1.1/2″
2″
Note: The nominal bore is a discretionary dimension only. The wall thickness can vary depending on the gauge of tube used which will alter the bore measurement.