Home > Companies > Fixfast Ltd > DrillFast® A4/316 Stainless Steel Composite Panel Fasteners for 8.0–25.0 mm Steel

Stainless steel composite panel self-drilling fasteners for roofing and cladding (8–25 mm).

Features and benefits:

  • Grade 1.4401 (316), A4 stainless steel is used for optimum resistance to corrosion.
  • Bi-metal, manufactured for superior drilling performance.
  • Unique twist-point enables self-drilling into 25 mm thick steel.
  • Good pull-out and shear performance.
  • High thread provides optimal clamping force to top sheet.
  • Manufactured in accordance with ISO 9001 and ISO 14001 Quality and Management Systems.

Applications:

Suitable for the mechanical fixing of composite panel systems to super-heavy steel sections. 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.

To be fixed with Fixfast GreenDrive (8 mm Hexagon integral socket with retaining clip).

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

Standard product features

Material:

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

Coating:

Organic.

Head type:

Hexagon, 8 mm.

Drilling capacity:

8–25 mm (steel).

Minimum penetration (heavy steel purlins):

56 mm (through underside).

Build up:

90–243 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 8 mm steel: 10.82 kN; on 12 mm steel: 10.82 kN; on 25 mm steel: 10.82 kN.
  • Pull through values (axial load resistance): Composite panel with A15 washer: 2.61 kN.
  • Shear values (lateral load resistance, with no washer): 8 mm steel: 0.89 kN.

– Design values:

  • Pull out values (axial load resistance, to BS 5427): On 8 mm steel: 8.13 kN; on 12 mm steel: 8.13 kN; on 25 mm steel: 8.13 kN.
  • Pull through values (axial load resistance): Composite panel with A15 washer: 1.96 kN.
  • Shear values (lateral load resistance, with no washer): 8 mm steel: 0.67 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 Stainless Steel Composite Panel Fasteners for 8.0–25.0 mm Steel, DF25-SSA4-HT-6.3 x 225]
-
225 x 6.3 mm (l x diameter).
[DrillFast® A4/316 Stainless Steel Composite Panel Fasteners for 8.0–25.0 mm Steel, DF25-SSA4-HT-6.3 x 275]
-
275 x 6.3 mm (l x diameter).
[DrillFast® A4/316 Stainless Steel Composite Panel Fasteners for 8.0–25.0 mm Steel, DF25-SSA4-HT-6.3 x 325]
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325 x 6.3 mm (l x diameter).

Washers

[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
NBS Plus
RIBA CPD