Glass adaptor D50, SS, satin, for tube Ø42.4

The Strofix D50 glass adaptor for Ø42.4 mm tube is a stainless-steel point fixing used to mount 8–17.52 mm glass panels onto Ø42.4 mm tubular crossbars and posts in balustrades, railings, and partition systems. Available in AISI 304 or AISI 316 grade with a fixed 10 mm spacer, satin finish, a Ø50 mm flat cover, and an M10 screw (× 50 mm for AISI 304, × 40 mm for AISI 316).

The base of the adaptor is machined with a curved seat that matches the Ø42.4 mm tube profile, providing full contact and a clean visual transition between the cover and the tube. Each adaptor secures the glass through a single Ø18 mm pre-drilled hole, with a 17 mm inner bushing diameter, and is clamped by the M10 stainless-steel screw while the 10 mm un-threaded spacer sets the standoff between the tube and the glass. The Ø50 mm flat cover gives the fixing a substantial visual presence — between the D40 and D60 tube variants — suited to mid- to large-format tubular railings. AISI 304 suits interior and standard exterior installations; AISI 316 contains added molybdenum for higher resistance to chlorides and salt air, making it the correct choice for coastal and high-humidity environments.

The satin finish reduces visible fingerprints and micro-scratches compared to polished stainless steel and visually matches Strofix Ø42.4 mm tube and handrail components in a satin finish.

Use cases:

• Glass infill panels mounted to Ø42.4 mm horizontal crossbars in balustrade systems
• Tubular post-and-rail balcony and terrace railings with glass infill
• Stair railings with Ø42.4 mm posts and glass side panels
• Pool fencing and seafront tubular railings (AISI 316 recommended)
• Commercial mezzanine and walkway edge protection with tubular frames
• Mid- to large-format tubular railings where a Ø50 mm cover is the right visual scale

FAQ:

What tube diameter is this adaptor designed for?

This adaptor is machined specifically for Ø42.4 mm tube (mounting surface type: Tube ø 42,4 mm). The curved seat will not fit other tube diameters correctly — for different tube sizes, choose a different Strofix adaptor variant.

What glass thickness does this adaptor support?

The D50 tube adaptor is suitable for glass panels from 8 mm to 17.52 mm thick, covering standard toughened glass and most common laminated glass buildups used in balustrades and railings.

What size hole must be drilled in the glass?

A minimum Ø18 mm hole is required. The adaptor uses a 17 mm inner bushing diameter for the M10 screw. The hole must be pre-drilled by the glass supplier before tempering — toughened glass cannot be cut or drilled after heat treatment.

What is the difference between AISI 304 and AISI 316?

AISI 316 contains molybdenum, which provides higher resistance to chlorides and salt air. Specify AISI 316 for coastal, pool, and high-humidity installations. AISI 304 is sufficient for interior use and standard outdoor conditions inland. On this SKU, AISI 304 ships with an M10 × 50 mm screw and AISI 316 with an M10 × 40 mm screw.

How does this differ from the D40 and D60 tube adaptors?

All three are designed for Ø42.4 mm tube. The D40 has a Ø40 mm cover with M10 × 40 mm fixing on 8–17.52 mm glass through a Ø19.5 mm hole. The D50 has a Ø50 mm cover with M10 × 40/50 mm fixing on the same 8–17.52 mm glass through a Ø18 mm hole. The D60 has a Ø60 mm cover with a longer M10 × 100 mm screw through a Ø19.5 mm hole. Choose the D50 when a moderately large visible fixing is required without the depth of the D60 assembly.

Is the spacer height adjustable?

No. This SKU ships with a fixed 10 mm un-threaded spacer, which sets the standoff distance between the tube and the glass. The spacer cannot be adjusted after installation.

About glass adaptors

A glass adaptor is a stainless-steel point fixing that attaches a glass panel to a supporting structure through a drilled hole in the glass. It transfers load from the panel to the substrate while keeping visible hardware to a minimum, leaving the glass as the main visual element in balustrades, façades, partitions, canopies, and shower enclosures.

Strofix supplies round glass adaptors from Ø12 mm up to Ø70 mm (including D30, D38, D40, D50, D60 and D70) plus square 38×38 and 40×40 versions, in AISI 201, AISI 304 and AISI 316 stainless steel, with satin, polished or painted finishes and a broad range of spacer heights. The right adaptor depends on glass thickness, wall-to-glass offset, environment and the type of supporting surface.

Glass adaptors are essential components used to securely connect glass panels to supporting structures while maintaining a clean, modern appearance. They are widely applied in glass railings, partitions, façades, canopies, and other architectural systems where both stability and design matter. By creating a reliable fixing point between glass and metal or wall-mounted surfaces, glass adaptors help distribute load evenly and ensure structural safety without compromising transparency.