Set 21C, tread support with M10 internal thread for 6-9 mm metal stringers

Tread supports Set 21C – simply rest the treads on the supports and screw them in place

Rest the treads on the supports and screw them in place – no additional tread machining required. Version C is the most economical LamiFIX system for fixing stair treads at the side. The tread connector requires neither a groove nor a mounting hole in the tread. This saves machining time, installation time and costs.

Application and design

Set 21C in INOX A2 fixes stair treads to metal stringers 6–9 mm thick. The tread support has an M10 internal thread. There is a 22 mm gap between the tread and the metal stringer.

Installation and supplied components

The tread support is tightened through the metal stringer using an M10 countersunk screw and secured with threadlocker. The stair tread is placed on the support and screwed in place. The Set has no sound insulation and is intended for single-family homes.

• Tread support in INOX A2 with M10 internal thread
• Countersunk screw for fixing to the metal stringer
• Threadlocker
• TX tread fixing screw

Ordering options

• LF 3623.521.4: Set in a small pack
• LF 3623.521.6: Set for quantities of 100 pieces or more at industrial prices

Guide prices for powder-coated steel stringers

As a cost guide: steel stringers measuring 4.1 m × 280 × 10 mm, including RAL powder coating, cost approximately CHF 550.– for 1 piece or CHF 500.– per piece for 2 pieces. Example supplier: Lastech, technik@lastech.ch.

Compatible with tread suspension systems

Version C can also be combined with LamiFIX tread suspension systems. Depending on the stair design, choose between the Ø10 mm tread suspension system and the Ø16 mm tread suspension system . The treads are suspended from the handrail or ceiling; the rods are made to measure.