5. Surface protection
5.4 Standardisation of galvanic corrosion protection systems 5.4.1 Designation system in accordance with DIN EN ISO 4042 The most common system for the abbreviated designation of galvanic surfaces on fasteners is the standard DIN EN ISO 4042. In the first place, this standard stipulates the dimensional requirements for fasteners made of steel and
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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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