Glass adaptor D30, SS, polished, for tube Ø42.4

The Strofix D30 polished glass adaptor for Ø42.4 mm tube is a stainless-steel point fixing used to mount 6–12.76 mm glass panels onto Ø42.4 mm tubular crossbars and posts in balustrades, railings, and partition systems. Supplied in AISI 304 with a fixed 15 mm spacer and a mirror-polished finish.

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 Ø14 mm pre-drilled hole and is tightened with an M8 × 40 mm stainless-steel screw, while the Ø30 mm cover gives a low-profile appearance and distributes load evenly across the contact point. AISI 304 is the standard chromium-nickel stainless steel and provides reliable corrosion resistance for indoor installations and standard protected outdoor environments away from coastal conditions.

The polished finish produces a bright, mirror-like surface that reflects surrounding light and visually matches Strofix Ø42.4 mm tube and handrail components in a polished finish. Compared to satin stainless steel, polished hardware offers a more decorative, high-shine appearance but shows fingerprints and fine surface marks more readily.

Use cases:

• Glass infill panels mounted to Ø42.4 mm polished horizontal crossbars in balustrade systems
• Tubular post-and-rail balcony and terrace railings with glass infill
• Hotel lobbies, showrooms, and luxury retail railings where reflective hardware is preferred
• Stair railings with Ø42.4 mm posts and glass side panels
• Commercial mezzanine and walkway edge protection with polished tubular frames
• Interior glazed partitions combining polished stainless tube and glass.

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 D30 adaptor is suitable for glass panels from 6 mm to 12.76 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 Ø14 mm hole is required for the M8 through-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 polished and satin finish?

The polished finish is mirror-bright and highly reflective, suited to decorative interiors, luxury retail, and hospitality environments. The satin finish is matte and reduces visible fingerprints and micro-scratches. Polished hardware shows handling marks more readily, so it is generally preferred for indoor or protected settings where appearance is the main selection driver.

What stainless steel grade is used?

This SKU is supplied in AISI 304, the standard chromium-nickel stainless steel. AISI 304 provides reliable corrosion resistance for indoor installations and standard protected outdoor environments. For coastal, pool, or chloride-rich locations, a higher-grade stainless steel such as AISI 316 should be specified — available on the satin tube variant of this product.

Is the spacer height adjustable?

No. This SKU ships with a fixed 15 mm spacer, which sets the standoff distance between the tube and the glass panel. The spacer cannot be adjusted after installation.

Can I install it myself?

Yes, with basic tools: a drill bit suited to the tube material, a torque wrench, and pre-drilled glass. The tube must be drilled to accept the M8 screw, and the curved base should be seated flush against the Ø42.4 mm tube before tightening. Handle glass panels with two people to avoid cracking.

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.