Key Clamp A20 Mid Corner Tee: a 90º corner joint, tube passes through the central hole. Used frequently for a lower rail(s). Often used in conjunction with the A18.
Key Clamp A20 Mid Corner Tee Sizes
| Code | Size | Tube outside diameter | Nominal bore |
|---|---|---|---|
| A20-5 | 5 | 26.9mm | 3/4″ |
| A20-6 | 6 | 33.7mm | 1″ |
| A20-7 | 7 | 42.4mm | 1 1/4″ |
| A20-8 | 8 | 48.3mm | 1 1/2″ |
| A20-9 | 9 | 60.3mm | 2″ |
Specification
- Material: malleable iron casting, manufactured in excess of BS 6681 (ISO 5922) and BS 2789 (ISO 1083).
- Finish: hot-dip galvanised to BS EN ISO 1461 as standard. Powder coating on request.
- Set screws: Dacromat coated and case hardened. When tightened to 29 ft lb (4.1 kgm), a slip load of 900kg can be obtained on each screw.
- Assembly: tightens onto the tube with a hexagon key. No welding, drilling or threading.
Dimensions are given as guidance only and are subject to manufacturing tolerances. Because these are galvanised castings, we do not recommend pre-drilling bolt holes before the fittings are on site.
Order and Quote
Choose the size, add it to your quote and add the tube lengths you need: we cut galvanised tube to length free. Stock orders go out for next-day delivery, and we reply to quotes within one hour in working hours. Not sure which fitting you need? Send us a sketch and we will list the parts.
See the full key clamp fittings range and our guide to choosing the right key clamp size.





