ST Trading supplies fasteners for agricultural machinery – including ploughs and rotary cultivators. Products for agriculture Bolts – including hexagon head and carriage bolts (DIN 603) Nuts – including nylon-insert lock nuts (DIN 985) Washers – flat and spring washers (DIN 125, DIN 127) What to include in your enquiry State the standards, sizes, property class and coating of the parts – in line with the machine manufacturer’s documentation – together with the quantities. Request a quote Fasteners in agricultural machinery Ploughs, cultivators and other soil-working machinery operate under heavy, variable loads, vibration and constant contact with soil and moisture. Fasteners hold the frame, working parts and wearing parts together, so the property class and corrosion protection should match the machine manufacturer’s specification. Carriage bolts (DIN 603) are common in these machines: when the square neck sits in a square hole, the bolt does not turn as the nut is tightened. Lock nuts help to limit loosening of joints exposed to vibration.