Glass adaptor D70 spherical, SS, satin

The Strofix D70 spherical glass adaptor is a heavy-duty stainless-steel point fixing used to mount 8–17.52 mm glass panels to flat surfaces in architectural façades, canopies, and feature glazing. Supplied in AISI 304 with a fixed 10 mm spacer, satin finish, and a selectable M10 × 45 mm or M12 × 45 mm screw.

The Ø70 mm cover has a spherical (domed) profile, which is both a visual feature and a functional one: it allows small angular deviations between the glass and the mounting surface, making it well suited to point-fixed glazing where perfect planarity between wall, spacer, and panel cannot be guaranteed. Each adaptor secures the glass through a single Ø18 mm pre-drilled hole, with a 17 mm inner bushing diameter to accept the M10 or M12 screw, and clamps a 10 mm un-threaded spacer between the substrate and the glass. 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 satin finish reduces visible fingerprints and micro-scratches compared to polished stainless steel and suits architectural glazing where a clean, neutral look is required.

Use cases:

• Architectural glass façades and curtain wall point-fixed panels
• Glass canopies, entrance awnings, and porte-cochères
• Full-height glass partitions and atrium walls
• Retail storefront and shopfront glazing
• Heavy-duty balustrades with structural laminated glass
• Feature glazing where a visible large-diameter fixing is part of the design language

FAQ:

What glass thickness does this adaptor support?

The D70 spherical adaptor is suitable for glass panels from 8 mm to 17.52 mm thick, covering standard toughened glass and most common structural laminated glass buildups used in façades, canopies, and heavy-duty balustrades.

Which screw size should I choose — M10 or M12?

Both options use the same 45 mm length and Ø18 mm glass hole. M10 is the lighter of the two and matches typical wall-anchor sets for standard point-fixed glazing. M12 provides a higher-capacity fixing for heavier panels or more highly loaded assemblies. Match the screw size to the structural calculation for your specific installation and to the wall-anchor set you plan to use.

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, so the glass hole must be Ø18 mm regardless of whether M10 or M12 is selected. The hole must be pre-drilled by the glass supplier before tempering — toughened glass cannot be cut or drilled after heat treatment.

What does "spherical" mean for this adaptor?

The cover has a rounded, dome-shaped profile rather than a flat disc. The spherical geometry gives the fixing a distinctive visual signature and allows small angular tolerances between the mounting plane and the glass — useful in façade and canopy applications where perfect alignment is hard to guarantee.

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.

Is the spacer height adjustable?

No. This SKU ships with a fixed 10 mm un-threaded spacer, which sets the standoff distance between the substrate and the glass. The spacer cannot be adjusted after installation — if a larger offset is required, a different D70 variant with a taller spacer should be used.

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.