Screw for gypsum board and metal Koelner/Rawlplug 3.5 x 32 mm, for drywall sheets

Self-drilling screw Koelner/Rawlplug 3.5 x 32 mm is designed for fastening gypsum board (drywall) to metal profiles. With a 3.5 mm diameter and 32 mm length, this screw provides secure anchoring in thin steel studs commonly used in interior partition walls and suspended ceilings. The screw head and thread geometry are optimised for driving into metal without pre-drilling, ensuring consistent engagement with drywall sheets while maintaining the sheet surface integrity.

Advantages

The screw offers self-drilling capability that saves time by eliminating the need for separate pilot holes when working with typical metal framing thicknesses. Its length is chosen to ensure sufficient penetration into metal studs while minimising the risk of protrusion through the opposite side. The thread profile secures gypsum board to the metal profile and reduces the likelihood of loosening over time under normal indoor conditions.

Suitable for (tasks / use cases)

• Installing gypsum board (G-K) to metal framing in interior walls and ceilings
• Mounting partition walls and lightweight stud constructions
• Repairing or replacing drywall panels where metal studs are present
• Professional and DIY drywall assembly where self-drilling fasteners are preferred

When it may not be suitable

This screw is intended for fastening gypsum board to metal profiles and may not be appropriate for structural applications requiring higher shear or tensile strength. It is not designed for use in masonry, concrete, or wood where different thread forms and lengths are required. For very thick metal sections or heavy-duty load-bearing attachments, a specialist fastener or mechanical anchor should be used instead.

Key specifications

• Diameter: 3.5 mm
• Length: 32 mm
• Intended use: fastening gypsum board to metal profiles
• Head type: countersunk/flat (suitable for drywall finishing)
• Drive type: compatible with standard screwdrivers or bits (e.g., pozidriv/phillips depending on batch)
• Material/coating: corrosion-resistant coating appropriate for interior use (check product packaging for exact finish)

How to use

Position the gypsum board against the metal profile and align according to installation layout. Using an appropriate driver and bit, drive the self-drilling screw through the drywall into the metal profile until the screw head is flush or slightly recessed with the board surface; avoid over-driving which can damage the paper face. Space screws according to drywall manufacturer recommendations and local building codes. No separate pilot hole is typically needed for standard thin metal studs, but confirm compatibility with the profile thickness before starting work.

What to consider before purchase

• Verify that a 3.5 mm diameter and 32 mm length are suitable for the thickness of your drywall and metal profile.
• Confirm the head and drive type match your finishing and tool requirements.
• Check corrosion resistance specification if installation will be exposed to elevated humidity.

Usage recommendations

Use in conjunction with recommended drywall spacing and profiles. Store screws in a dry place and use the correct bit to reduce cam-out and ensure consistent seating. For load-bearing or exterior applications select fasteners specifically rated for those conditions.