SELF DRILLING SCREWS ROOFFAST DUAL POINT
General purpose hex washer face style dual point self-drilling screw, can be used in timber or steel up to 3mm thick. Specifications/Features Type
Hex washer face with neoprene washer
Socket Size
Hex socket drive 5/16”
Coating
Mechanical galv suitable for ISO 9223 categories 1-5 (Class 5)
Headmark
F5 = Fortress class 5
Material
Steel 1022
Dual Point
Can be used in both timber or steel purlins
Size mm
Thread Per Inch TPI
Torsional Strength kg-cm
Pull-Out 1.2mm Steel Kn
Recommended Timber Embedments Min mm
Pull-Out Timber Kn
23
4.16
27
4.76
33
5.36
6 x 25 6 x 55
11
112 (Minimum) 170 (Typical)
3.5
6 x 65 * Pullout load is an indicative average and will vary depending on factors such as materials used.
Withdrawal test as per AS3566.1-2002 Maximum drill speed Timber: 1800 rpm, Steel: 2500rpm Mechanical properties to AS3566.1-2002 Screws are available with painted heads to match NZ coloursteel, such as Titania, Ironsand, Grey Friars, Karaka, New Denim Blue, Scoria etc.
DEKs TrueBlue EPDM sealing washer • • • •
Non-conductive, low carbon to prevent corrosion problems. High quality EPDM provides an excellent bond between rubber and metal. Paintable UV and Ozone resistant
SPECIFICATION SHEET
• • • •
0800 425 262 fortress.kiwi Disclaimer: This data should be used as a guide only, for exact applications you should engage the services of a qualified engineer.
JUL 2023
Always look for the Blue strip to know you are using the best quality EPDM sealing washer.