Hobson performance data
14g Countersunk Wing Tek Screw 14-20 x 65, Class 3: Performance Data
Hobson's two-page DRiLLX performance data sheet for the 14 gauge, 20 TPI countersunk metal self-drilling screw with wings, 65mm long, Class 3 finish (part T9PG3SI1420065). It covers applications, pull-out values, the drill point test, mechanical properties, dimensions and installation.
What this covers
- Applications
- Pull-out values
- Drill point test
- Mechanical properties
- Dimensions
- Technical note
- Installation
Key things to remember
The essentials from this document in plain words. Check the full document before you rely on a figure.
- For fixing timber to metal: fences, chipboard, composite panels and timber floors. The wings make a clearance hole in the timber and break off once the screw starts drilling the metal; 6 ribs under the head let it self-embed into timber.
- C1022 hardened steel, Class 3 finish. One size: 14-20 x 65, IHEX #5 drive, packs of 500.
- Pull-out working load: 300N in 0.7mm G2 plate, 1,650N in 2.0mm G450 and 5,300N in 5.0mm HRS. The working loads already include factors of safety and come from laboratory tests.
- Drill point test: drills 2.0mm G450 plate in 5 seconds on average (6 seconds maximum) at 2,200 RPM under an 18kg load.
- Not recommended for fixing long lengths of timber directly to steel: movement between timber and steel from thermal expansion, humidity, building settling or overdriving can break the screw.
- Install with a cordless screwdriver set at 2,200 to 3,000 RPM, with firm, steady pressure while it drills. Do not over-tighten, and impact drivers are not recommended.
Who it helps: Builders fixing timber, flooring or panels to steel.
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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.