Home > Companies > Fixfast Ltd > DrillFast® A2/304 Stainless Steel Stitching Fasteners

Stainless steel self-drilling stitching fasteners for roofing and cladding.

Features and benefits:

  • Grade 1.4301 (304), A2 stainless steel is used for optimum resistance to corrosion.
  • Bi-metal, manufactured for superior drilling performance.
  • Good pull-out and shear performance.
  • Free-spin design helps to prevent damage arising from over-driving the fastener.
  • Manufactured in accordance with ISO 9001 and ISO 14001 Quality and Management Systems.

Applications:

Suitable for the mechanical fixing/ stitching together of two metal sheets up to 1 mm thick. 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 1.4301 (304) stainless steel with carbon steel case and hardened, welded point.

Coating:

Organic.

Head type:

Hexagon, 8 mm.

Drilling capacity:

Two steel sheets up to 1 mm thick each.

Minimum penetration (sheet material):

14 mm (through underside).

Durability class:

  • Interior environments: C1 (30).
  • Semi-interior: 25.
  • Urban: C2 (25).
  • Rural: C3 (25).
  • Industrial/ coastal: C4 (15).
  • Marine: C5.

Technical characteristics:

– Characteristic values:

  • Pull out values (axial load resistance, to BS 5427): 4.8 mm diameter, on 0.5 mm steel: 0.54 kN; 6.3 mm diameter, on 0.5 mm steel: 0.60 kN.
  • Pull through values (axial load resistance): 0.5 mm steel with 4.8 mm diameter fastener and A15 washer: 3.33 kN; 0.5 mm steel with 6.3 mm diameter fastener and A15 washer: 3.38 kN.
  • Shear values (lateral load resistance, to BS 5427): 0.5 mm steel with 4.8 mm diameter fastener and A15 washer: 1.02 kN; 0.5 mm steel with 6.3 mm diameter fastener and A15 washer: 1.25 kN.

– Design values:

  • Pull out values (axial load resistance, to BS 5427): 4.8 mm diameter, on 0.5 mm steel: 0.40 kN; 6.3 mm diameter, on 0.5 mm steel: 0.45 kN.
  • Pull through values (axial load resistance): 0.5 mm steel with 4.8 mm diameter fastener and A15 washer: 2.50 kN; 0.5 mm steel with 6.3 mm diameter fastener and A15 washer: 2.54 kN.
  • Shear values (lateral load resistance, to BS 5427): 0.5 mm steel with 4.8 mm diameter fastener and A15 washer: 0.76 kN; 0.5 mm steel with 6.3 mm diameter fastener and A15 washer: 0.94 kN.

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

Options

Product reference:

Consult manufacturer for further details.

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® A2/304 Stainless Steel Stitching Fasteners, DF2-SS-LS-A15-4.8 x 25]
-
25 x 4.8 mm (l x diameter).
[DrillFast® A2/304 Stainless Steel Stitching Fasteners, DF2-SS-LS-A15-6.3 x 25]
-
25 x 6.3 mm (l x diameter).
[DrillFast® A2/304 Stainless Steel Stitching Fasteners, DF2-SS-LS-A19-6.3 x 25]
-
25 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