Glass adaptor D70 spherical, SS, satin

The Strofix D70 spherical glass adaptor with 32 mm spacer is a heavy-duty stainless-steel point fixing used to mount thick 8–21.52 mm glass panels to flat surfaces in architectural façades, canopies, and feature glazing. Supplied in AISI 304 with a fixed 32 mm spacer, a spherical cover, satin finish, and an M12 × 100 mm screw. 
The 32 mm un-threaded spacer creates a deeper standoff than the 10 mm variant of the same family, which is useful where a pronounced shadow gap between the substrate and the glass is required or where wall insulation and finish layers add depth to the mounting plane.

Each adaptor secures the glass through a single Ø18 mm pre-drilled hole, with a 17 mm inner bushing diameter, and is clamped by an M12 × 100 mm stainless-steel screw — the longer screw length is matched to the deeper spacer. The Ø70 mm spherical (domed) cover 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 cannot be guaranteed. 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 with deeper standoff
• Glass canopies, entrance awnings, and porte-cochères with insulated wall buildups
• Full-height glass partitions and atrium walls where a pronounced shadow gap is desired
• Retail storefront and shopfront glazing on prepared substrates
• Heavy-duty balustrades with thick laminated glass up to 21.52 mm
• Feature glazing where a large-diameter visible fixing is part of the design language

FAQ:

What glass thickness does this adaptor support?

This D70 spherical variant is suitable for glass panels from 8 mm to 21.52 mm thick, covering standard toughened glass and thicker structural laminated glass buildups commonly used in façades and heavy-duty balustrades.

How does this differ from the 10 mm spacer D70 variant?

The 10 mm spacer variant supports 8–17.52 mm glass with an M10 or M12 × 45 mm screw. This 32 mm variant supports thicker glass up to 21.52 mm, uses a fixed M12 × 100 mm screw, and creates a deeper 32 mm standoff. Choose this SKU when the installation requires a larger wall-to-glass offset or the glass buildup exceeds 17.52 mm.

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. 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 32 mm un-threaded spacer, which sets the standoff distance between the substrate and the glass. The spacer cannot be adjusted after installation — if a shorter offset is required, the 10 mm D70 variant should be used instead.

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.