Stair tread bolt Set 1B, T=50 mm, for screwing into wood

Stair tread bolt Set 1B – side fixing with a drilled recess

LamiFIX stair tread bolt Set 1B allows treads with a drilled recess to be fitted to a wooden stringer or directly into a wooden wall without a stringer. The connector is inserted into the hole in the tread. A matching cover cap gives the fixing point a neat finish.

Application and design

Set 1B is designed for screwing into wood. The version offered has an embedment depth of T = 50 mm with an 18 mm gap; the same bolt can be screwed in to T = 68 mm for flush installation. According to the catalogue, T = 50 mm is suitable for glued laminated timber in the first two illustrated grain directions and for softwood in the first illustrated direction. For flush installation, T = 68 mm corresponds to the blue value for softwood on catalogue page 18. Check the wood species and grain direction in the product gallery tables. Version B is designed for installation with a drilled hole in the tread.

Installation

Holes in the wooden stringer or wall must be drilled accurately in position and angle.

For stairs without stringers, we lend drill bushes free of charge for up to three months. They make accurate on-site drilling straightforward.

Technical details

• Set: 1B and Set 3624B (flush, T = 68 mm)
• Embedment depth: T = 50 mm or T = 68 mm flush
• Bolt installation: screw into wood
• Tread machining: drilled hole, installation version B

Required quantity per Set

• 1 stair tread bolt INOX A2, LF 3623.050.1
• 1 tread fixing screw LF 1560.003
• 1 cover cap LF 1435.001
• Waxilit lubricant LF 3625.001, required quantity: 1/50 tube per Set

Article number: LF 3623.250.4

Matching installation accessories

Driving tool LF 2150.036.3 and Ø25 mm HSS wood twist drill bit LF 2001.250.3 are available separately. Detailed information on the drilling aid is provided on catalogue page 26.