Glass adaptor D40, SS, satin

The Strofix D40 glass adaptor with 6 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. Supplied in AISI 304 with a fixed 6 mm spacer, satin finish, a Ø40 mm flat cover, and an M8 × 45 mm screw.

The 6 mm un-threaded spacer creates a minimal wall offset, while 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 Ø12 mm pre-drilled hole, with an 11 mm inner bushing diameter, and is clamped by an M8 × 45 mm stainless-steel screw. The Ø40 mm flat cover gives the fixing a moderate visual presence — larger than the D30 cap and smaller than the D60 — suited to mid-format point-fixed glazing. 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 where a minimal wall offset is required
• 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 prepared substrates
• Shower enclosures and screen panels with thicker glass

FAQ:

What glass thickness does this adaptor support?

The D40 with 6 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 Ø12 mm hole is required for the M8 screw. The adaptor uses an 11 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 10 mm spacer D40 variant?

This variant has a 6 mm spacer, an M8 screw, and a Ø12 mm glass hole with an 11 mm bushing. The sister 10 mm spacer SKU uses an M10 screw with a larger Ø15 mm glass hole and 14 mm bushing — a heavier-duty fixing for the same glass thickness range. Choose the 6 mm/M8 version when minimal wall offset is required and standard M8 fixing is sufficient; choose the 10 mm/M10 version for heavier-duty installations.

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 6 mm un-threaded spacer, which sets a short standoff distance between the wall and the glass. The spacer cannot be adjusted after installation — choose a different D40 variant if a larger offset or adjustable spacer is required.

Can I install it myself?

Yes, with basic tools: a drill with the correct bit for your wall material, a torque wrench, an M8-rated wall anchor matched to the substrate, and pre-drilled glass. Thicker laminated glass panels are heavier than standard toughened glass and should be handled with two people. Follow the glass supplier's recommended torque 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.