Hobson performance data
Type 17 Washer Head Torx Timber Screw 18-5, Tykote: Data Sheet
A two-page Hobson data sheet (2017) for the Type 17 washer head Torx drive self drilling timber construction screw in 18 gauge, 5 TPI, with Tykote coating. It covers sizes, the coating, ultimate pullout strength in treated pine and applications.
What this covers
- Sizes and packs
- Tykote coating
- Ultimate pullout strength
- Applications
Key things to remember
The essentials from this document in plain words. Check the full document before you rely on a figure.
- Six lengths: 18-5 x 75, 100, 125, 150, 200 and 250 (T9PWTGO1805075 to T9PWTGO1805250), Torx T40 drive, packs of 250 to 100.
- Tykote is a high performance coating formulated to resist treated pine chemicals. C1022 hardened steel.
- For connecting heavy duty treated timber to timber: listed as ideal for outdoor pergolas, retaining walls, fencing and gates.
- Ultimate pullout in H2 treated F5 radiata pine, screw across the grain, characteristic: 4,860N with 29mm of thread embedded and 17,630N with 56mm embedded. These are ultimate laboratory values, not working loads.
Who it helps: Builders joining heavy treated pine on pergolas, retaining walls, fences and gates.
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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.