Hobson performance data
BDX vmaX Hex and Washer 6.2mm x 25: Performance Data
Hobson's three-page performance data sheet for the BDX vmaX hex and washer screw, part T9PV9SH6211025. It is a 6.2mm screw for fixing metal up to 1.5mm and metal to timber, and the sheet covers size, pullout values, mechanical properties, a drill point test and installation.
What this covers
- Applications
- Material and finish
- Sizes and dimensions
- Pullout values
- Mechanical properties
- Drill point test
- Installation
Key things to remember
The essentials from this document in plain words. Check the full document before you rely on a figure.
- 6.2mm diameter, 11 TPI, 25mm long, hex washer head 15mm across with a 5/16 inch drive.
- C1022 hardened steel with the X9 ProteXion coating, which the sheet rates as suitable for ISO 9223 category 4 environments.
- Uses: metal to metal fixing up to 1.5mm, metal to timber fixing, wall cladding, sheds, valley fixing and roofing.
- Working pullout load: 400N in G2 steel 0.55mm, 950N in G2 1.10mm and 2,100N in G2 1.50mm. The 2.5 factor of safety for steel is already included; the mean and characteristic loads beside them are test values. All values come from laboratory tests, and real pullout can differ with the base material.
- Drill point test: under a 18kg load at 2,200 RPM it drills 1.9mm G550 plate in no more than 4 seconds on average (5 seconds at most for any one screw).
- Drive with a cordless screw gun at 2,200 to 3,000 RPM using a hex drive bit, with firm, steady pressure, and do not over-tighten. Impact drivers are not recommended.
Who it helps: Builders, fabricators and roofers choosing a self-drilling screw for steel, and staff checking sizes or pullout figures.
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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.