Hobson performance data
Type 17 Flanged Hex Scratchguard and Seal Timber Screw 12-11, Class 4: Performance Data
A two-page DRiLLX performance data sheet for the Type 17 flanged hex head with Scratchguard and Seal self drilling timber screw (T9PW4SS1211 range), 12 gauge, Class 4 finish, for fixing steel roofing and cladding to timber framing. It gives pullout values in pine and hardwood, mechanical properties, sizes and installation.
What this covers
- Applications
- Pullout values
- Mechanical properties
- Dimensions
- Installation
Key things to remember
The essentials from this document in plain words. Check the full document before you rely on a figure.
- Sizes: 12-11 x 45, 50 and 65mm (T9PW4SS1211 range), 14.5mm flanged hex head, 5/16 inch hex drive.
- C1022 hardened steel, Class 4 finish. For fixing steel roofing and cladding to timber framing.
- Working pullout load at 35mm embedment: 2,100N in F7 pine and 2,550N in F27 hardwood. Working loads include a factor of safety of 2.5 for timber; mean and characteristic values are also listed, all from laboratory tests.
- Characteristic shear strength 6,650N and characteristic tensile strength 11,050N (mean 8,350N and 13,950N); torsional strength 9.4Nm.
- Install with a cordless screwdriver at no more than 1,500RPM, with firm pressure. Do not over-tighten; impact drivers are not recommended.
Who it helps: Roofers and builders fixing steel roofing or cladding to timber.
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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.