Home > Companies > Fixfast Ltd > DrillFast® Fasteners For Timber

Carbon steel self-drilling timber fasteners for roofing and cladding (1.2 mm).

Features and benefits:

  • High quality carbon steel with SAE1022 hardened case.
  • High drilling and tapping performance.
  • Good pull-out and shear performance.
  • Manufactured in accordance with ISO 9001 and ISO 14001 Quality and Management Systems.

Applications:

For mechanically fixing metal sheeting systems up to 1.2 mm thickness to timber. For use in the following locations:

  • Buildings in residential and commercial settings with humidity class of Class 1, Class 2 or Class 3 to BS 5250.
  • Buildings with an internal temperature range of -45°C to 50°C.

To be fixed with Fixfast YellowDrive (8 mm hexagon integral socket).

Fixfast products must be used as a complete system with tools and accessories as recommended – consult manufacturer for details.

Standard product features

Material:

Steel SAE1022 case, hardened.

Coating:

Multiple layer organic.

Head type:

Hexagon, 8 mm.

Drilling capacity:

1.2 mm (steel sheet).

Minimum penetration:

  • 18 mm plywood: 12 mm (through underside).
  • Timber: 35 mm embedment.

Build up:

  • 18 mm plywood: 0–5 mm (dependant on washer used).
  • 35 mm timber: 0–30 mm (dependant on washer used).

Durability class:

  • Interior environments: C1 (25).
  • Semi-interior: 20.
  • Urban: C2 (12).
  • Rural: C3.
  • Industrial/ coastal: C4.
  • Marine: C5.

Technical characteristics:

- Characteristic values:

  • Pull out values (axial load resistance, to BS 5427): Softwood 35 mm embedment: 4.82 kN.
  • Pull through values (axial load resistance): 0.5 mm steel with A15 washer: 3.38 kN; 0.7 mm steel with A15 washer: 4.78 kN.
  • Shear values (lateral load resistance): C16 softwood with no washer: 2.09 kN; C16 softwood with A15 washer: 1.79 kN.

- Design values:

  • Pull out values (axial load resistance, to BS 5427): Softwood 35 mm embedment: 3.62 kN.
  • Pull through values (axial load resistance): 0.5 mm steel with A15 washer: 2.54 kN; 0.7 mm steel with A15 washer: 3.59 kN.
  • Shear values (lateral load resistance): C16 softwood: 1.57 kN; C16 softwood with A15 washer: 1.35 kN.

Other figures and specific testing are available on request - consult manufacturer for information.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-50-60/415 Self-drilling or self-tapping screws

Product specification

An important note about specifying

Manufacturer

Name:

Fixfast Ltd

Tel:

+44 (0)1732 882387

Product reference

[DrillFast® Fasteners for Timber, DFT-5.5 x 25]
-
25 x 5.5 mm (l x diameter).
[DrillFast® Fasteners for Timber, DFT-5.5 x 35]
-
35 x 5.5 mm (l x diameter).
[DrillFast® Fasteners for Timber, DFT-5.5 x 45]
-
45 x 5.5 mm (l x diameter).
[DrillFast® Fasteners for Timber, DFT-5.5 x 65]
-
65 x 5.5 mm (l x diameter).

Washer

[Required]
-
Consult manufacturer for information.
[Not required]

Manufacturer details

Merlin House,
Seven Mile Lane,
Borough Green,
Sevenoaks,
Kent, TN15 8QY
Tel +44 (0)1732 882387
Fax +44 (0)1732 885532
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RIBA CPD