Home > Companies > Fixfast Ltd > DrillFast® A4/316 Low Profile Stainless Steel Fasteners for Timber

Low profile, stainless steel self-drilling fasteners for roofing and cladding to timber.

Features and benefits:

  • Grade 1.4401 (316), A4 stainless steel is used for optimum resistance to corrosion.
  • Bi-metal, manufactured for superior drilling performance.
  • Good pull-out and shear performance.
  • Low profile head for a discreet finish, which can be powder-coated for colour-matching.
  • Manufactured in accordance with ISO 9001 and ISO 14001 Quality and Management Systems.

Applications:

Suitable for the mechanical fixing of metal sheeting systems (of maximum 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, Class 3 or Class 4 to BS 5250.
  • Buildings with an internal temperature range of -45°C to 50°C.
  • Coastal locations (but should not be placed into contact with sea water).

To be fixed with Fixfast RedDrive.

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

Standard product features

Size (l x diameter):

35 x 4.9 mm.

Material:

Grade 1.4401 (316) stainless steel with carbon steel case and hardened, welded point.

Coating:

Organic.

Head type:

Low profile pan, TX25 recess.

Drilling capacity:

1.2 mm maximum (steel).

Build up (into 18 mm plywood substrate):

0–6 mm (dependent on washer used).

Durability class:

  • Interior environments: C1 (40).
  • Semi-interior: 40.
  • Urban: C2 (40).
  • Rural: C3 (30).
  • Industrial/ coastal: C4 (30).
  • Marine: C5 (25).

Technical characteristics:

– Characteristic values:

  • Pull out values (axial load resistance, to BS 5427): On 18 mm plywood: 2.03 kN.
  • Pull through values (axial load resistance, to BS 5427): 0.5 mm steel with no washer: 2.61 kN.
  • Shear values (lateral load resistance, with A15 washer, to BS 5427): Softwood 35 mm embedment: 1.73 kN.

– Design values:

  • Pull out values (axial load resistance, to BS 5427): On 18 mm plywood: 1.62 kN.
  • Pull through values (axial load resistance, to BS 5427): 0.5 mm steel with no washer: 1.96 kN.
  • Shear values (lateral load resistance, with A15 washer, to BS 5427): Softwood 35 mm embedment: 1.30 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® A4/316 Low Profile Stainless Steel Fasteners for Timber, DFT-SSA4-P(L)-4.9 x 35

Washers

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

Colour

Polyester powder coated, colour - Insert requirements.

Manufacturer details

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