SWEBOLT & BOTNIA BOLT supply trapezoidal threaded rods according to DIN 103 in A4 acid-resistant stainless steel. A4 material offers excellent corrosion resistance in marine, chemical, and high-humidity environments, making it ideal for demanding industrial and offshore applications. The trapezoidal thread design ensures high axial load capacity and smooth, precise linear motion. Suitable for mechanical systems, lifting equipment, and construction uses. Supplied in standard lengths or cut to length. EN 10204 3.1 material certificates available upon request.