5. Surface protection
Hot-dip galvanising Immersion in molten metal bath Min. layer thicknesses approx. 40 µm Process temperature approx. 450°C Greater corrosion protection Not suitable for small screws Cathodic corrosion protection Fasteners for steel construction. For example, HV kits. Applicable for fasteners ≥ M12 Corrosion resistance between
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4. Manufacturing screws and nuts - Würth
www.wuerth-industrie.com4. Manufacturing screws and nuts 4.1 Manufacturing processes In principle, the following manufacturing processes are ... thread rolling. 1774 10 Diagram of the stages for a hexagonal nut ... External diameter of the thread Chamfer course on thread cutting Chamfer course on thread forming.
4. Manufacturing screws and nuts
www.wuerth-industrie.comThread cutting In this procedure the thread is made by means of a tap or a screw stock. With screws, this procedure is mainly used for very low production runs or with machined parts as well. However, things are different when a female thread is made. In this case the thread is usually cut with a screw tap or taper tap.
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