Hobson performance data
Type 17 Countersunk Timber Screw 10-12, Class 3: Performance Data
A two-page DRiLLX performance data sheet for the Type 17 countersunk head self drilling timber screw (T9PW3CP1012 range), 10 gauge, 12 TPI, Class 3 finish, for general fixing of timber and thin steel. It covers pullout values, 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.
- Two lengths: 30mm (T9PW3CP1012030) and 40mm (T9PW3CP1012040). 10 gauge, 12 TPI, 9mm countersunk head, Phillips #2 drive, packs of 1,000.
- C1022 hardened steel, Class 3 finish. For general fixing of timber and thin steel and side cladding, for example pergolas, fences, gates and light fittings.
- Working pullout load at 35mm embedment: 1,500N in F7 pine and 2,750N 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 5,600N and characteristic tensile strength 9,350N (mean 6,450N and 10,750N); torsional strength 5.4Nm.
- 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: Builders fixing pergolas, fences, gates and light fittings 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.