Glass adaptor D30, with inner thread, SS, satin

The Strofix D30 glass adaptor with inner thread is a stainless-steel point fixing used to mount 4–16.76 mm glass panels to flat surfaces in balustrades, façades, and partition systems, with a threaded spacer that allows fine adjustment of the glass offset during installation. Supplied in AISI 304 with a flat cover, satin finish, and five selectable spacer heights (10, 22, 32, 42, or 52 mm).

Each adaptor secures the glass through a single Ø14 mm pre-drilled hole and is tightened with an M8 × 45 mm stainless-steel screw that engages the M8 inner thread of the spacer. The threaded spacer lets the installer fine-tune the standoff distance after the screw is engaged — listed as "slightly adjustable" — which is useful for compensating for wall irregularities or aligning multiple panels in a run. The Ø30 mm flat cover sits close to the glass and distributes load evenly across the contact point. 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, giving a clean, neutral look that suits commercial railings and architectural glazing.

Use cases:

• Balustrades where multiple glass panels must be aligned precisely along a run
• Glass partitions on uneven or out-of-plumb walls requiring on-site adjustment
• Façade and curtain wall glazing with tight alignment tolerances
• Stair side glazing and mezzanine edge protection
• Shower enclosures and screen panels
• Retrofit installations where wall flatness cannot be guaranteed

FAQ:

What glass thickness does this adaptor support?

The D30 inner-thread adaptor is suitable for glass panels from 4 mm to 16.76 mm thick, covering thin single-pane glass, standard toughened glass, and most common laminated glass buildups.

Which spacer height should I choose?

The threaded spacer sets the standoff distance between the wall and the glass. Choose 10 mm for minimal offset, 22 or 32 mm for standard wall construction, and 42 or 52 mm where additional clearance is needed for insulation or finish layers. Select the spacer that matches your nominal wall-to-glass distance — the thread allows fine on-site adjustment within a small range.

How is this different from the standard D30 glass adaptor?

The standard D30 uses an un-threaded spacer with a through-screw, giving a fixed standoff distance. This variant has an M8 inner thread in the spacer, so the glass offset can be fine-tuned on site by turning the fixing — listed as "slightly adjustable". Choose the inner-thread version when alignment tolerances are tight or wall flatness is uncertain.

What size hole must be drilled in the glass?

A minimum Ø14 mm hole is required for the M8 through-screw. 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.

Can I install it myself?

Yes, with basic tools: a drill with the correct bit for your wall material, a torque wrench, and pre-drilled glass. Once the wall anchor is set, the threaded spacer can be rotated to fine-tune the standoff before tightening the M8 × 45 mm screw. Handle glass panels with two people and 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.