Home > Companies > Fixfast Ltd > DrillFast® A4/316 Stainless Steel Low Profile Lacquered Composite Panel Fasteners for 1.2–3 mm Steel

Low profile stainless steel self-drilling fasteners for roofing and cladding (1.2­–3 mm).

Features and benefits:

  • Grade 1.4401 (316) stainless steel 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 may be powder coated for colour matching.
  • High thread provides optimal clamping force to the top sheet.
  • Manufactured in accordance with ISO 9001 and ISO 14001 Quality and Management Systems.

Applications:

For mechanically fixing composite panel systems to light metal purlins, rails, and 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 (integral socket with TX25 drive).

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

Standard product features

Material:

Stainless steel, grade 1.4401 (316), with carbon steel case and hardened, welded point.

Coating:

Organic.

Head type:

Low profile pan, TX25 recess.

Drilling capacity:

1.2–3 mm (steel).

Minimum penetration:

  • Light steel purlins: 18 mm (through underside).
  • Softwood: 35 mm embedment.

Build up:

48–220 mm (dependant 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 1.2 mm steel: 1.43 kN; on 2 mm steel: 2.75 kN; on 3 mm steel: 4.90 kN; on 35 mm softwood embedment: 2.11 kN.
  • Pull through values (axial load resistance): 0.5 mm steel with A15 washer: 2.53 kN.
  • Shear values (lateral load resistance): 1.2 mm steel: 0.98 kN.

- Design values:

  • Pull out values (axial load resistance, to BS 5427): On 1.2 mm steel: 1.08 kN; on 2 mm steel: 2.07 kN; on 3 mm steel: 3.68 kN; on 35 mm softwood embedment: 1.59 kN.
  • Pull through values (axial load resistance): 0.5 mm steel with A15 washer: 1.90 kN.
  • Shear values (lateral load resistance): 1.2 mm steel: 0.74 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® Stainless Steel Low Profile Lacquered Composite Panel Fasteners for 1.2–3 mm steel, DF3-SSA4-P-HT-5.5 x 115]
-
115 x 5.5 mm (l x diameter).
[DrillFast® Stainless Steel Low Profile Lacquered Composite Panel Fasteners for 1.2–3 mm steel, DF3-SSA4-P-HT-5.5 x 155]
-
155 x 5.5 mm (l x diameter).
[DrillFast® Stainless Steel Low Profile Lacquered Composite Panel Fasteners for 1.2–3 mm steel, DF3-SSA4-P-HT-5.5 x 240]
-
240 x 5.5 mm (l x diameter).

Washer

[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