ST Trading supplies fasteners for electrical installations, switchgear and transformers – bolts, nuts, washers and threaded rods, also in stainless steel. Products for electrical installations and transformers Bolts and nuts – including flange bolts (DIN 6921), flange nuts (DIN 6923) and nylon-insert lock nuts (DIN 985) Washers – flat (DIN 125) and spring washers (DIN 127) Stainless steel fasteners Threaded rods (DIN 976) What to include in your enquiry State the standards and sizes, the material and coating (e.g. zinc-plated steel or stainless steel), the required property class and the quantities. For non-standard parts, attach a drawing. Request a quote Fasteners in the power sector In transformers, switchgear and electrical cabinets, fasteners fix supporting structures, enclosures and busbars, and are also used to make electrical connections. Corrosion resistance, joint stability under temperature changes and resistance to vibration all matter here. Flat washers distribute the clamping load, and the way joints are secured against loosening should follow the equipment manufacturer’s specification. Fasteners for outdoor or damp environments need a material and corrosion protection suited to the application – stainless steel is a common choice. Threaded rods serve as tie rods and parts of support structures.
