Screwpile GM Round Adapter

The Screwpile GM Round Adapter converts the head of a GM series screw pile into a flat circular bearing plate, so round posts, steel columns, base plates and prefabricated post shoes can be mounted directly onto the pile.

The plate is 220 mm in diameter, pressed from S235 structural steel and hot-dip galvanised, giving a large, stable bearing area that spreads point loads into the pile head.

Key features

• Large 220 mm bearing plate — spreads load and simplifies setting out.
• Fits the GM series screw pile head directly, no adaptation needed.
• S235 steel with hot-dip galvanising for long outdoor service life.
• Suits round timber posts, steel columns and bolted base plates.
• Removable — the pile and adapter can be unwound and reused.

Where it is used

• Carports, canopies and pergolas built on round or square posts.
• Garden rooms and cabins with bolted steel base plates.
• Terrace edges where a post has to land exactly on a pile head.
• Any GM pile installation that needs a flat, bolt-through connection.

Screw piles carry point loads of several tonnes and install in hours rather than days. The round adapter is what makes that pile head usable with standard timber and steel post fixings.