Hobson performance data
BDX Metal SDS Flanged Hex Head 14-20 x 22 to 45mm: Performance Data
Hobson's three-page performance data sheet for the BDX metal SDS flanged hex head screw with the finer 20 TPI thread, part prefix T9PM9FH1420. It covers sizes, 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.
- 14 gauge, 20 TPI, lengths 22, 25 and 45mm, flanged hex head 15mm across with a 3/8 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, wall cladding, sheds, fencing and gates, signs, hinges into metal posts, gates and doors, and stitching flashing.
- Working pullout load: 300N in G2 steel 0.8mm, 1,650N in G450 2.0mm and 2,850N in G450 2.5mm. 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 24kg load at 2,200 RPM it drills 2.5mm G450 plate in no more than 5 seconds on average (6 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.