Hobson performance data
BDX S500 Hex Head and Washer 12-24 for Hot Rolled Steel: Performance Data
Hobson's three-page performance data sheet for the BDX S500 hex head and washer screw, part prefix T9P59SH1224, made for thick steel purlins and hot rolled steel. 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.
- 12 gauge, 24 TPI, lengths 32, 50, 65 and 85mm, hex washer head 14mm across with a 5/16 inch drive. Drill point 15mm long.
- 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, thick steel purlins and hot rolled steel, and roofing and walling sheets to hot rolled steel.
- Working pullout load: 1,400N in G450 steel 2mm, 2,250N in G2 3mm, 5,350N in hot rolled steel 5mm and 6,650N in 6mm. 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 27kg load at 2,200 RPM it drills 8mm CRS plate in no more than 7 seconds on average (10 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: Steel fabricators, builders and roofers fixing sheeting to thick purlins and hot rolled 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.