Factory photograph of roofing screws (bf-140). Finishes shown are examples — all fifteen catalogue finishes are available on this item.
Roofing Screws (BF-140)
Roofing screws for fixing profiled sheet to steel purlin or timber. Roofing screws drill and tighten immediately whether the deck is steel or wood; where the sheet is under 1mm a self-tapping version is used instead of a self-drilling one.
- M1.4-6.3(0#-14#)
- 6mm-300mm
- Suits steel purlin and timber deck alike
- Under 1mm sheet: self-tapping. Over 1mm: self-drilling
- EPDM bonded washer in 14mm, 16mm or 19mm
Specification
- Item code
- BF-140
- Standard
- IFI,DIN,JIS,GB,Special Design
- Size Range
- M1.4-6.3(0#-14#)
- Length Range
- 6mm-300mm
- Material
- Carbon steel and stainless steel A2 A4 and 410
- Product group
- Self Drilling Screws / Tek Screws
Item code BF-140 follows our internal catalogue reference — quote it and we know exactly which line you mean. Figures shown are the specification range this item is made to, not a stock list.
Selection options
Every option below can be specified against this item. Head and drive are chosen independently of each other, and of the point and thread form.
| Head types | Options |
|---|---|
| Available | Flat · Pan · Hex washer head · Hex washer flange · Bugle · Wafer · Pan washer · Oval · Flower · Truss · Round |
| Drive types | Options |
|---|---|
| Available | Phillips · Square · Pozidriv · Square + Phillips · Torx · Slotted · Phillips + slotted |
| Point types | Options |
|---|---|
| Available | TEK#1 · TEK#2 · TEK#3 · TEK#4 · TEK#5 · Type 17 |
| Thread forms | Options |
|---|---|
| Available | Type-A · BSB · CSB · Hi-low · Machine · Double |
| Surface finishes | Options |
|---|---|
| Available | Plain · Zinc plated · Colour zinc · Blue zinc · White zinc · Black zinc · Black phosphate · Grey phosphate · Black oxide · Dacrotized · Ruspert · Xylan · Nickel · Bronze · Spray paint |
| Additional requests | Options |
|---|---|
| Available | Serration under head · Without washer · With bonded washer · With PVC washer · With steel + EPDM washer · With rubber washer · With head mark · With wing · Slotted + wing |
Questions we get asked about this item
Where is the cut-off between self-tapping and self-drilling?
Around 1mm of steel. Below that a self-tapping roofing screw is the right choice; above it the self-drilling point earns its place.
What washer size do I need?
It follows the profile and the fixing position. The three outside diameters we hold are 14mm, 16mm and 19mm.
Also in Self Drilling Screws / Tek Screws
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Longer Hex Washer Head Tek Screws
Long hex washer head self-drilling screws in yellow zinc, for fixings that have to reach through insulation or a build-up of layers
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Pan Framing Tek Screws
Pan framing self-drilling screws — the screw used for light gauge steel framing, where studs and tracks have to be joined quickly an
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Truss Tek Screws
Truss head self-drilling screws with a washer face, supplied zinc plated.
View specification
Truss Tek Screws (BF-153)
Truss head self-drilling screws in a yellow zinc finish.
View specificationRelated reading: self drilling vs self tapping · finishes and salt spray · materials and property classes
Quote Roofing Screws (BF-140)
Send diameter, length, head, drive, material, finish and quantity. If the combination you need is not on the standard matrix, send a drawing instead.