Fischer GKM 27 100 st 31 mm

The fischer gypsum plasterboard fixing GKM 27 is a metal anchor designed for reliable attachment in gypsum-based boards. Supplied complete with a countersunk chipboard screw, the GKM 27 is intended for quick, flush installation in single-layer gypsum plasterboard without pre-drilling; for gypsum fibreboard and double-layer plasterboard a Ø 8 mm pre-drill is required. The anchor is 31 mm long, compatible with screws up to 4.5 mm diameter, and comes in packs of 100 pieces.

Advantages

The metal construction provides stable load-bearing capacity in gypsum materials, while the included countersunk chipboard screw ensures a complete fastening set. Pre-positioned installation allows manual or cordless-screwdriver tightening until the anchor sits flush with the board surface. The product’s standardized dimensions and pack quantity make it suitable for consistent use on larger jobs.

Suitable for

• Mounting lights and luminaires on single-layer gypsum plasterboard
• Fastening electrical installations and boxes in gypsum boards
• Attaching interior accessories such as shelves, rails, and fixtures

Key specifications

• Length: 31 mm
• Maximum screw diameter: 4.5 mm
• Minimum drill hole depth: 35 mm
• Pre-drilling: not required for single plasterboard; Ø 8 mm for gypsum fibreboard and double-layer plasterboard
• Pack quantity: 100 pieces
• Color: silver
• Brand: FISCHER
• MPN: 40434
• EAN: 4006209404348

How to use

For single-layer gypsum plasterboard, position the anchor in the desired spot and screw it in manually or with a cordless screwdriver until it sits flush with the surface; no pre-drilling is necessary. For gypsum fibreboard or double-planked gypsum board, drill a Ø 8 mm hole to the minimum depth of 35 mm before inserting the anchor and tightening until flush. After the anchor is set, drive the included countersunk chipboard screw to secure the fixture.

Recommendations

Use appropriate screw sizes and observe the maximum screw diameter of 4.5 mm. Verify substrate condition and load requirements before installation; for heavy or dynamic loads consult relevant load tables or the manufacturer’s technical data.