Home > Companies > Fixfast Ltd > SureFast® A4/316 Stainless Steel Fasteners

Stainless steel self-drilling fasteners for flat roofing.

Features and benefits:

  • Manufactured from grade 1.4401 (316) stainless steel.
  • Good corrosion resistance, suitable for use in marine environments.
  • Drillpoint designed for fast, accurate penetration of metal decks up to 2 x 1 mm.
  • Optimised thread design for good pull-out performance and resistance to unwinding.
  • Compatible with a range of SureFast® tube washers and pressure plates – consult manufacturer for details.
  • Manufactured in accordance with ISO 9001 and ISO 14001 Quality and Management Systems.
  • ETA approved, and CE marked.

Applications:

For mechanical fixing of the following:

  • Single-ply and flat roofing systems to aluminium, steel and timber decks in combination with appropriate SureFast® components.
  • Flat roofing accessories and trims to thin metal and timber materials.
  • Timber battens and similar materials to thin metal substrates.

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.

To be fixed with Fixfast TX25 drive bar range.

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 hardened, welded point.

Coating:

Organic.

Head type:

Oval, TX25 recess.

Drilling capacity:

2 x 1 mm S275 steel sheets (maximum).

Drill point width:

3 mm.

Head diameter:

9.1 mm.

Minimum penetration:

  • Thin steel: 17 mm (through underside).
  • Plywood/ oriented strand board (OSB) decks: 17 mm (through underside).
  • Timber board decks: 15 mm (through underside).
  • Softwood: 35 mm (embedment).

Build up:

0–181 mm (dependent on fastener 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:

Pull out values (axial load resistance): On 0.7 mm steel: 1.08 kN; on 0.9 mm steel: 1.45 kN; on 1.2 mm steel: 2.24 kN; on 18 mm plywood: 1.77 kN; on 18 mm OSB: 1.37 kN; on softwood: 3.89 kN.

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

[SureFast® A4/316 Stainless Steel Fasteners, SF-RS-SSA4-4.8 x 40]
-
40 x 4.8 mm (l x diameter).
[SureFast® A4/316 Stainless Steel Fasteners, SF-RS-SSA4-4.8 x 60]
-
60 x 4.8 mm (l x diameter).
[SureFast® A4/316 Stainless Steel Fasteners, SF-RS-SSA4-4.8 x 80]
-
80 x 4.8 mm (l x diameter).
[SureFast® A4/316 Stainless Steel Fasteners, SF-RS-SSA4-4.8 x 100]
-
100 x 4.8 mm (l x diameter).
[SureFast® A4/316 Stainless Steel Fasteners, SF-RS-SSA4-4.8 x 120]
-
120 x 4.8 mm (l x diameter).
[SureFast® A4/316 Stainless Steel Fasteners, SF-RS-SSA4-4.8 x 160]
-
160 x 4.8 mm (l x diameter).
[SureFast® A4/316 Stainless Steel Fasteners, SF-RS-SSA4-4.8 x 200]
-
200 x 4.8 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
NBS Plus
RIBA CPD