ISO 4014 / DIN 931 A4
SWEBOLT & BOTNIA BOLT supply A4-70 and A4-80 acid-resistant stainless hex bolts according to ISO 4014 / DIN 931, partially threaded with metric coarse thread (M). Designed for marine, chemical, and outdoor environments, where high corrosion resistance and mechanical strength are essential. The partial thread improves clamping under load.
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