Hobson performance data
Polycarbonate Roofing Screw 12-11 All-in-1, Type 17 Hex Head: Performance Data
A two-page DRiLLX performance data sheet for the Type 17 self drilling hex head Polycarb All-in-1 roofing screw (T9PW4PA1211 range), 12 gauge, 11 TPI, Class 4, for fixing polycarbonate sheet to timber. It covers pullout values, mechanical properties, screw, washer and cutter dimensions, and installation.
What this covers
- Applications
- Pullout values
- Mechanical properties
- Washer and cutter dimensions
- Installation
Key things to remember
The essentials from this document in plain words. Check the full document before you rely on a figure.
- Two lengths: 12-11 x 50 (T9PW4PA1211050) and 12-11 x 65 (T9PW4PA1211065), 5/16 inch hex drive, packs of 250. C1022 hardened steel, Class 4.
- For polycarbonate sheet to timber, crest fixing polycarbonate roof sheets, pergolas and sheds.
- A large domed sealing washer supports and seals the polycarbonate, and an expansion hole cutter makes a thermal expansion hole in the roofing sheet.
- Working pullout load at 35mm embedment: 2,100N in F7 pine and 2,550N in hardwood. Working loads include a factor of safety of 2.5 for timber; mean and characteristic values are also listed, all from laboratory tests.
- Install with a cordless screwdriver set to 1,500RPM. Tighten until the dome washer is in firm contact with the sheet without compressing or deforming it; impact drivers are not recommended.
Who it helps: Builders and DIYers fixing polycarbonate roofing on pergolas and sheds.
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This document is published by Hobson Engineering, who supply this range to us. We show it here in full so you can read it next to the product; the summary above is ours. Read it on this page or download the PDF. For the most current version, ask us.