Glass adaptor D50 spherical, SS, polished

The Strofix D50 polished spherical glass adaptor is a stainless-steel point fixing used to mount 8–17.52 mm glass panels to flat surfaces in balustrades, façades, canopies, and architectural glazing. Supplied in AISI 304 with a fixed 10 mm spacer, mirror-polished finish, a Ø50 mm domed cover, and an M10 × 45 mm screw.

The Ø50 mm spherical (domed) cover gives the fixing a distinctive rounded profile and allows small angular deviations between the glass and the mounting surface, which is useful in façade and canopy applications where perfect planarity between substrate, 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, and is clamped by an M10 × 45 mm stainless-steel screw, with the 10 mm un-threaded spacer setting a short standoff between the wall 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 polished finish produces a bright, mirror-like surface that reflects surrounding light and visually integrates with chrome and glass interiors. Compared to a satin finish, polished stainless steel offers a more decorative, high-shine appearance, but shows fingerprints and fine surface marks more readily.

Use cases:

• Hotel lobbies, showrooms, and luxury retail glazing where reflective hardware is preferred
• Architectural glass façades and curtain wall point-fixed panels in mid-size formats
• Glass canopies, entrance awnings, and porte-cochères in decorative settings
• Balustrades with toughened or laminated glass up to 17.52 mm in interior environments
• Full-height glass partitions and atrium walls in commercial interiors
• Feature glazing where a polished domed fixing is part of the design language

FAQ:

What glass thickness does this adaptor support?

The D50 polished spherical 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, façades, and canopies.

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 does "spherical" mean for this adaptor?

The Ø50 mm 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 size hole must be drilled in the glass?

A minimum Ø18 mm hole is required for the M10 screw. 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 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 D50 spherical variant.

Is the spacer height adjustable?

No. This SKU ships with a fixed 10 mm un-threaded spacer, which sets the standoff distance between the wall and the glass. The spacer cannot be adjusted after installation. For on-site adjustment of the standoff, the D50 spherical variant with inner thread 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.