D-Fixing Fire Rated Screws (pack of 100) 40mm long x 5.1mm Thread Width, 18th Edition Compliant

The D-Fixings screws are fire-rated screws with a 40mm long shaft and close threads which combine to provide exceptional performance.

These D-Line D-Fixings screws are ideal for securing D-Line fire-rated Safe-D ranges and other electrical installation equipment in popular substrates - including masonry, plasterboard / breeze-block, concrete, brickwork and wood. 

The D-Fixings have been extensively tested, and are certified to hold Safe-D clips and cable loads up to 970°C for 2 hours, after withstanding stress vibrations and water sprays also.

In fire tests the D-Fixing screw threads remain securely embedded with no need for anchors or plastic wall plugs (which typically melt at 160°C).

D-Fixing Fire Rated Screws - Features

• Dimensions: 40mm Length x 5.1mm Thread Width x 8.3mm Head Width
• Note: a 4mm pilot hole required
• It is certified for 2 hours at 970°C
• It is fully safety tested and certified to BS5839 part 1 compliant
• High melting point: >1200ºc melting point
• It has a non-corrosive finish
• There's no need for plastic wall plugs
• It has excellent tensile strength, shear strength and pull-out load performance

D-Fixing Fire Rated Screws - Strength Test Information

• Tensile strength: 12.8 kN / 1305 kg / 205 stone
• Shear strength: 6.7 kN / 683 kg / 107 stone
• Typical pullout load (C25 concrete)*: 5.8 kN / 591 kg / 93 stone
• Typical pullout load (LBC common brick)*: 3.8 kN / 387 kg / 60 stone
• Typical pullout load (C24 timber)*: 3.0 kN / 305 kg / 47 stone 
  *Pullout loads based on 35mm embedment, 4mm pilot hole