Hobson data sheet
Threaded Rod Class 4.6 Zinc Plated: Sizes, Proof Loads and Safe Working Loads
Hobson's one-page data sheet for class 4.6 zinc plated threaded rod, part prefix ASMSZCM. It lists every size from M3 to M48 with pitch, stress area, minimum proof load and safe working load, and which sizes come in 1m and 3m lengths.
What this covers
- Applications
- Material and finish
- Sizes and pitch
- Proof load and safe working load
- Lengths
Key things to remember
The essentials from this document in plain words. Check the full document before you rely on a figure.
- Made to DIN 975, ISO property class 4.6, zinc plated (RoHS compliant). Used for hanging services, fire protection systems and HVAC, and internal ceiling supports.
- When used as a tie-down rod, install it to AS 1684.3.
- Safe working load in static tension, with a safety factor of 5: M10 265kg, M12 387kg, M16 720kg, M20 1,123kg. Add a further safety factor for dynamic loads.
- Minimum proof load: M10 13.0kN, M12 19.0kN, M16 35.3kN, M20 55.1kN.
- Every size comes in 1m lengths; M6 and larger also in 3m. Extra lengths for special jobs: M12 and M16 in 2,440, 2,570, 2,700 and 3,600mm; M30 and M36 in 1,200 and 1,400mm.
Who it helps: Electricians, plumbers and HVAC installers hanging services, and builders using rod as a tie-down.
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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.