Distribution of locking systems is looking for carriage bolts square neck in stainless steel A4 DIN 603 M8x35 A4 - 500 pcs. DIN 603 M8x30 A4 - 500 pcs. DIN 603 M10x40 A4 - 500 pcs. DIN 603 M10x80 A4 partially threaded - 500 pcs. DIN 603 M10x70 A4 partially threaded - 500 pcs.