Glass adaptor D40, SS, satin

The Strofix D40 glass adaptor with 10 mm spacer is a stainless-steel point fixing used to mount 4–21.52 mm glass panels close to flat surfaces in balustrades, façades, and architectural glazing, with a heavier-duty M10 fixing for higher-load installations. Supplied in AISI 304 with a fixed 10 mm spacer, satin finish, a Ø40 mm flat cover, and an M10 × 100 mm screw.

The 10 mm un-threaded spacer creates a short standoff between the wall and the glass, while the M10 screw — larger than the M8 used on the sister 6 mm SKU — provides higher fixing capacity for heavier glass panels or more highly loaded assemblies. The wide glass thickness range (4 mm to 21.52 mm) covers everything from thin single-pane glass to thick structural laminated buildups, making the D40 a versatile mid-size adaptor between the D30 and D60 families. Each adaptor secures the glass through a single Ø15 mm pre-drilled hole, with a 14 mm inner bushing diameter, and the long M10 × 100 mm screw is matched to deeper substrates such as insulated walls. 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:

• Balustrades with toughened or laminated glass requiring a heavier-duty M10 fixing
• Glass façades and curtain wall infill panels in mid-size formats
• Full-height glass partitions in offices, retail, and hospitality spaces
• Stair side glazing and mezzanine edge protection
• Glass canopies and entrance awnings on insulated or thicker substrates
• Shower enclosures and screen panels with thicker glass

FAQ:

What glass thickness does this adaptor support?

The D40 with 10 mm spacer is suitable for glass panels from 4 mm to 21.52 mm thick. This wide range covers thin single-pane glass, standard toughened glass, and thicker structural laminated buildups commonly used in balustrades and façades.

What size hole must be drilled in the glass?

A minimum Ø15 mm hole is required for the M10 screw. The adaptor uses a 14 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.

How does this differ from the 6 mm spacer D40 variant?

This variant has a 10 mm spacer, an M10 screw, and a Ø15 mm glass hole with a 14 mm bushing. The sister 6 mm spacer SKU uses a smaller M8 screw with a Ø12 mm glass hole and 11 mm bushing. Choose the 10 mm/M10 version for heavier-duty installations or where a longer screw is needed for thicker substrates; choose the 6 mm/M8 version when a minimal wall offset and standard M8 fixing is sufficient.

Why is the screw 100 mm long?

The M10 × 100 mm length is matched to deeper substrates — for example, insulated walls or façade buildups where the screw must pass through finish layers and into structural backing. The actual standoff between wall and glass remains the fixed 10 mm spacer; the extra screw length anchors the assembly into the substrate behind any cladding.

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 wall and the glass. The spacer cannot be adjusted after installation — choose a different D40 variant if a different offset or adjustable spacer is required.

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.